what is it's story about?
The episode follows the citizens of Quahog after they are invited by actor James Woods to his stately mansion on a remote island. While there, a series of murders occur, and the group struggles to determine who committed the mysterious acts, before ultimately attempting to escape from the island, and avoid being murdered themselves.
And Then There Were Fewer
The episode follows the citizens of Quahog after they are invited by actor James Woods to his stately mansion on a remote island. While there, a series of murders occur, and the group struggles to determine who committed the mysterious acts, before ultimately attempting to escape from the island, and avoid being murdered themselves. 
family guy season 9 episode 1 and then there were fewer It is an hour-long premiere of the ninth season of the  American animated television series.
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And Then There Were Fewer [SEP] Introduction
"And Then There Were Fewer" is the hour-long premiere of the ninth season of the American animated television series "Family Guy". It originally aired on Fox in the United States on September 26, 2010. The episode follows the citizens of Quahog after they are invited by actor James Woods to his stately mansion on a remote island. While there, a series of murders occur, and the group struggles to determine who committed the mysterious acts, before ultimately attempting to escape from the island, and avoid being murdered themselves. The episode borrows its premise and title from Agatha Christie's 1939 murder mystery "And Then There Were None", while also serving as a parody of the 1985 film "Clue".