The overall director of Los Angeles International Airport (LAX) commits suicide... now his two underlings spar amongst themselves for his former position and title, by attempting to prove they can handle the pressures of operating one of the world's largest and busiest aviation gateways.

A female, who is a trial witness against her boyfriend (drugs), disappears, and the LAX folks place the airport on security lockdown so that they can search for this missing federal witness. During the lockdown, Caitlin helps a couple that are having some wedding jitters.

As Christmas approaches, events at LAX heat up when the police show up looking for a robber dressed as Santa Claus. Meanwhile, Eddie, seeking a new job as Harley's assistant, meets an attractive barmaid. Roger also deals with being kicked out of his house after he has resumed his gambling addiction and squandered most of his wife's money, while Harley herself flashes back to a previous Christmas during a runway party where she and Roger had a brief fling which almost ended his marriage.