MFS Asia Pacific ex-Japan Fund (Prospectus Summary) | MFS Asia Pacific ex-Japan Fund

Summary of Key Information

Investment Objective

The fund's investment objective is to seek capital appreciation.

Fees and Expenses

This table describes the fees and expenses that you may pay when you buy and

hold shares of the fund. Expenses have been adjusted to reflect current fee

arrangements.



You may qualify for sales charge reductions if you and certain members of your

family invest, or agree to invest in the future, at least $50,000 in MFS Funds.

More information about these and other waivers and reductions is available from

your financial intermediary and in "Sales Charges and Waivers or Reductions" on

page 7 of the fund's prospectus and "Waivers of Sales Charges" on page I-13 of

the fund's statement of additional information Part I.

Shareholder Fees (fees paid directly from your investment):

Shareholder Fees MFS Asia Pacific ex-Japan Fund	A		B	C	I
Shareholder Fees, Column Name	A		B	C	I
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	5.75%		none	none	none
Maximum Deferred Sales Charge (Load) (as a percentage of original purchase price or redemption proceeds, whichever is less)	1.00%	[1]	4.00%	1.00%	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Annual Fund Operating Expenses MFS Asia Pacific ex-Japan Fund		A	B	C	I
Operating Expenses, Column Name		A	B	C	I
Management Fee		1.05%	1.05%	1.05%	1.05%
Distribution and/or Service (12b-1) Fees		0.25%	1.00%	1.00%	none
Other Expenses		13.39%	13.39%	13.39%	13.39%
Total Annual Fund Operating Expenses		14.69%	15.44%	15.44%	14.44%
Fee Reductions and/or Expense Reimbursements	[1]	(12.99%)	(12.99%)	(12.99%)	(12.99%)
Total Annual Fund Operating Expenses After Fee Reductions and/or Expense Reimbursements		1.70%	2.45%	2.45%	1.45%

Example

This example is intended to help you compare the cost of investing in the fund

with the cost of investing in other mutual funds.



The example assumes that: you invest $10,000 in the fund for the time periods

indicated and you redeem your shares at the end of the time periods (unless

otherwise indicated); your investment has a 5% return each year; and the fund's

operating expenses remain the same.

Although your actual costs will likely be higher or lower, under these assumptions your costs would be:

Expense Example MFS Asia Pacific ex-Japan Fund (USD $)	Expense Example, By Year, Column Name	Expense Example, With Redemption, 1 Year	Expense Example, With Redemption, 3 Years	Expense Example, With Redemption, 5 Years	Expense Example, With Redemption, 10 Years
A	Class A Shares	738	3,328	5,440	9,170
B	Class B Shares assuming redemption at end of period	648	3,340	5,507	9,240
C	Class C Shares assuming redemption at end of period	348	3,093	5,375	9,294
I	Class I Shares	148	2,862	5,089	9,057

Expense Example, No Redemption MFS Asia Pacific ex-Japan Fund (USD $)	Expense Example, No Redemption, By Year, Column Name	Expense Example, No Redemption, 1 Year	Expense Example, No Redemption, 3 Years	Expense Example, No Redemption, 5 Years	Expense Example, No Redemption, 10 Years
B	Class B Shares assuming no redemption at end of period	248	3,093	5,375	9,240
C	Class C Shares assuming no redemption at end of period	248	3,093	5,375	9,294

Portfolio Turnover

The fund pays transaction costs, such as commissions, when it buys and sells

securities (or "turns over" its portfolio). A higher portfolio turnover rate may

indicate higher transaction costs and may result in higher taxes when shares are

held in a taxable account. These transaction costs, which are not reflected in

"Annual Fund Operating Expenses" or in the "Example," affect the fund's

performance.  For the period from the fund's commencement of operations on

September 15, 2010, to the fund's fiscal year end of July 31, 2011, the fund's

portfolio turnover rate was approximately 76% of the average value of its

portfolio.

Principal Investment Strategies

MFS (Massachusetts Financial Services Company, the fund's investment adviser)

normally invests at least 80% of the fund's net assets in securities of issuers

in the Asia Pacific region, excluding Japan ("Asia Pacific ex-Japan"), and other

investments that are tied economically to the Asia Pacific ex-Japan region. The

Asia Pacific ex-Japan region includes Australia, Hong Kong, China, India, Indonesia,

Malaysia, New Zealand, the Philippines, Singapore, South Korea, Taiwan, and Thailand.

Many of the economies of countries in the Asia Pacific region are considered emerging

market economies.



MFS normally invests the fund's assets primarily in equity securities. Equity

securities include common stocks, preferred stocks, securities convertible into

stocks, and depositary receipts for those securities.



MFS may invest a large percentage of the fund's assets in issuers in a single

country or a small number of countries within the Asia Pacific ex-Japan region.



MFS may invest up to 35% of the fund's assets in any industry that accounts for

more than 20% of the Asia Pacific ex-Japan market.



In selecting investments for the fund, MFS is not constrained to any particular

investment style. MFS may invest the fund's assets in the stocks of companies it

believes to have above average earnings growth potential compared to other

companies (growth companies), in the stocks of companies it believes are

undervalued compared to their perceived worth (value companies), or in a

combination of growth and value companies.



MFS may invest the fund's assets in companies of any size.



While MFS may use derivatives for any investment purpose, to the extent MFS uses

derivatives, MFS expects to use derivatives primarily to increase or decrease

exposure to a particular market, segment of the market, or security. Derivatives

include futures, forward contracts, options, structured securities, inverse

floating rate instruments, and swaps.



A team of investment research analysts selects investments for the fund. MFS

allocates the fund's assets to analysts by broad market sectors.



MFS uses a bottom-up investment approach to buying and selling investments for

the fund. Investments are selected primarily based on fundamental analysis of

individual issuers. Quantitative models that systematically evaluate issuers may

also be considered.

Principal Risks

As with any mutual fund, the fund may not achieve its objective and/or you could

lose money on your investment in the fund. An investment in the fund is not a

bank deposit and is not insured or guaranteed by the Federal Deposit Insurance

Corporation or any other governmental agency.



The principal risks of investing in the fund are:



Stock Market/Company Risk:  Stock markets are volatile and can decline

significantly in response to issuer, market, economic, industry, political,

regulatory, geopolitical, and other conditions, as well as to investor

perceptions of these conditions. The price of an equity security can decrease

significantly in response to these conditions, and these conditions can affect a

single issuer or type of security, issuers within a broad market sector,

industry or geographic region, or the market in general.



Foreign and Emerging Markets Risk:  Exposure to foreign markets, especially

emerging markets, through issuers or currencies can involve additional risks

relating to market, economic, political, regulatory, geopolitical, or other

conditions. These factors can make foreign investments, especially those in

emerging markets, more volatile and less liquid than U.S. investments. In

addition, foreign markets can react differently to these conditions than the

U.S. market. Emerging markets can have less developed markets and less developed

legal, regulatory, and accounting systems, and greater political, social, and

economic instability than developed markets.



Currency Risk:  The value of foreign currencies relative to the U.S. dollar

fluctuates in response to market, economic, political, regulatory, geopolitical

or other conditions, and a decline in the value of a foreign currency versus the

U.S. dollar reduces the value in U.S. dollars of investments denominated in that

foreign currency.



Geographic Concentration Risk:  The fund's performance could be closely tied to

the market, currency, economic, political, regulatory, geopolitical, or other

conditions in the countries or regions in which the fund invests and could be

more volatile than the performance of more geographically-diversified funds.



Asia Pacific Risk:  Many of the economies of countries in the Asia Pacific

region are considered emerging market economies.  Countries in the Asia Pacific

region can be reliant on only a few industries or commodities.  Many Asia

Pacific economies may be intertwined, so they may experience recessions at the

same time or respond similarly to adverse events.  Furthermore, many of the Asia

Pacific economies are characterized by high inflation, undeveloped financial

service sectors, frequent currency fluctuations, devaluations, or restrictions,

political and social instability, and less efficient markets.  The economies of

many Asia Pacific countries are heavily dependent on international trade and can

be adversely affected by trade barriers, exchange controls and other measures

imposed or negotiated by the countries with which they trade.



Derivatives Risk:  Derivatives can be highly volatile and involve risks in

addition to the risks of the underlying indicator(s) on which the derivative is

based. Gains or losses from derivatives can be substantially greater than the

derivatives' original cost.  Derivatives can involve leverage.



Leveraging Risk:  Leverage involves investment exposure in an amount exceeding

the initial investment. Leverage can cause increased volatility by magnifying

gains or losses.



Investment Selection Risk:  The MFS analysis of an investment can be incorrect

and can lead to an investment focus that results in the fund underperforming

other funds with similar investment strategies and/or underperforming the

markets in which the fund invests.



Counterparty and Third Party Risk:  Transactions involving a counterparty or

third party other than the issuer of the instrument are subject to the credit

risk of the counterparty or third party, and to the counterparty's or third

party's ability to perform in accordance with the terms of the transaction.



Liquidity Risk:  It may not be possible to sell certain investments, types of

investments, and/or segments of the market at any particular time or at an

acceptable price.

Performance Information

The bar chart and performance table are not included because the fund has not

had a full calendar year of investment operations.

[1] On shares purchased without an initial sales charge and redeemed within 24 months of purchase.

[1] MFS has agreed in writing to bear the fund's expenses, excluding interest, taxes, extraordinary expenses, brokerage and transaction costs and investment-related expenses (such as interest and borrowing expenses incurred in connection with the fund's investment activity), such that "Total Annual Fund Operating Expenses" do not exceed 1.70% of the fund's average daily net assets annually for Class A shares, 2.45% of the fund's average daily net assets annually for each of Class B and Class C shares, and 1.45% of the fund's average daily net assets annually for Class I shares. This written agreement will continue until modified by the fund's Board of Trustees, but such agreement will continue until at least November 30, 2012.