The O.C.: Season 4 Episode 7

The Chrismukk-huh?

Chrismukkah once again returns to the Cohens. Ryan and Taylor have an accident while putting up the holiday lights and they end up in a sort of parallel universe, where all is not like it is meant to be, since Ryan does not exist. While – in the real world – everybody is worrying about them, except Taylor’s mom, they eventually manage to fix things, also thanks to a letter from the past.