When a crisis at LAX prevents dozens of airplanes from landing, the government brings in a group of misfit geniuses to sort things out.

After failing a military training mission, the team members are determined to prove themselves when an Internet infrastructure is threatened by a bomber.

The new Director of Homeland Security, Adriana Molina, reunites the team when a nuclear powered Russian satellite is knocked out of orbit and must be diverted before it detonates over Southern California. Paige and Walter face their feelings for each other when hospital footage reveals that Paige kissed him.