When a series of deadly explosions hits oil derricks across Los Angeles, SWAT teams up to hunt down an activist-turned-terrorist. Also, Deacon and his wife, Annie, work to free a reformed drug dealer who they believe was sent away for a murder he didn't commit.

When a plane carrying Street and the dangerous prisoner he's transporting is hijacked, the SWAT team races to save the innocent passengers onboard - and one of their own. Also, Hondo take a big step in his relationship with Nichelle.