Appa’s journey from being abducted in the desert to the present is explored.

It’s Valentine’s Day, and the doctors must treat dozens of injured people after the roof collapses at a popular romantic restaurant; Derek tries to manage his busy schedule as Chief…

Stan has to throw a party for his boss and assumes his wife Francine will do all the work, but she refuses. With Stan as party planner, the event turns…

Nancy has another full week of trouble to deal with and Doug isn’t helping. Heylia teaches Celia.

Niles poses as Fran’s husband to impress her visiting relatives.

Scully frantically searches for a way to help her ailing partner without having anyone to turn to for help, while a catatonic Mulder’s dreams lead him away from his mission…