According to Jim Recap: The Turkey Bowl
For some unknown - or unshared - reason, Jim and Andy have decided to go bowling on Thanksgiving. It could be to get out of helping prepare everything, but frankly, it seems like this would be one of Jim's favorite holidays, so I'm thinking that the tradeoff might well be worth it. Perhaps not. In any case, before the two of them can get out the door, Cheryl manages to unload Ruby and Gracie on them, to "get them out of her hair" in the kitchen. Not wanting to attract extra attention, they take them along.
What starts out as a quick day out for some bowling rapidly turns into something else as Jim throws one strike and then another, then he has five, and before you know it, he's on the verge of a perfect game. The only problem is that he has a very strict regimen of steps to take before each roll of the ball - a kiss from Ruby, a bite of a hot dog from Andy while he sits at the scorer table. This wouldn't be so bad, but it takes time, and just before he gets off the last ball, the power fails in the bowling alley, seemingly keeping him from rolling the perfect game.
As Jim asks God to bring back the power so he can bowl a perfect game, the guys from the band show up at the house for Thanksgiving dinner, and Dana has had just enough to drink that she is finding Chris to be quite cute and his comic books stories charming. At least until she stops drinking.
Eventually Cheryl tries to get Jim to come home, but he's intent on not leaving the bowling alley until he gets to roll that final ball, but the power doesn't seem like it's going to cooperate, so as the minutes and hours tick by, he has decided to go home and spend the end of the holiday with his family. As he gets up to leave, that's when Cheryl comes in and she has a bunch of candles, which she uses to light the alley so he can roll the final ball. She's also brought the whole gang with her, so they can have their dinner here, and when Jim rolls a strike for a perfect game, they all get into the picture.

















