When a crisis at LAX leaves dozens of airplanes unable to land, the government enlists a team of misfit geniuses to save the day.

The Governor calls on Team Scorpion when his daughter is mysteriously "bio-hacked" with a deadly virus and has only 24 hours to live. Meanwhile, the case takes on a deeper significance for Walter after he receives a letter regarding his sister.

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

Against Cabe's advice, Team Scorpion heads to Las Vegas for a simple casino job, but a robbery leads to Walter's arrest and the rest of the team is left to clear his name.

To fix a Los Angeles nuclear reactor that's on the verge of a cataclysmic meltdown, Walter and the team must reluctantly enlist the help of a troubled former member.

After being accused of destroying a priceless piece of art, the team must pass a mandated psych evaluation; Paige asks the team for help when Ralph is hesitant to go to the school Halloween party.