Eccentric genius, Walter O’Brien and his team of brilliant misfits comprise the last line of defense against complex, high-tech threats of the modern age. As Homeland Security’s new think tank, O’Brien’s ‘Scorpion’ team includes Toby Curtis, an expert behaviorist who can read anyone; Happy Quinn, a mechanical prodigy; and Sylvester Dodd, a statistics guru. Pooling their extensive technological knowledge to solve mind-boggling predicaments amazes federal agent Cabe Gallo, who shares a harrowing history with O’Brien. However, while this socially awkward group is comfortable with each other’s humor and quirks, life outside their circle confounds them, so they rely on Paige Dineen, who has a young, gifted son, to translate the world for them, while also helping each other learn how to fit in.
As Christmas approaches, Team Scorpion races to find a way to save a young boy's life after he gets trapped in a beachside cave and drowning is imminent.
When Sylvester accidentally triggers an explosive device during an investigation, Team Scorpion must focus on finding who's responsible even while their friend's life hangs in the balance.
When a military plane is shot down in Bosnia, Team Scorpion must help recover its stealth technology before it falls into enemy hands. Meanwhile, Walter's sister takes a break from her MS treatment and spends time at the garage with Sylvester.
Team Scorpion must help protect Cabe's ex-wife after she uncovers evidence that suggests foul play in the death of a prominent congressman.
Team Scorpion enlists the help of a musician who created a controversial algorithm that generates hit songs to help find the murderer of a music blogger. Meanwhile, Drew asks Walter to help him connect with his son.