According to Jim

It's Thanksgiving and Jim and Andy are going bowling. Cheryl doesn't like the idea very much, so she sends the girls with him. Jim has a perfect game, but just when he was about to bowl his final strike, the power goes off and he is left with either waiting for it to return or giving up being perfect. Cheryl surprises him by bringing the Thanksgiving dinner to the alley so Jim's family and friends can witness his perfect game.