Episode 1 : Pilot
When a crisis at LAX leaves dozens of airplanes unable to land, the government enlists a team of misfit geniuses to save the day.
Episode 2 : Single Point of Failure
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.
Episode 3 : A Cyclone
After Team Scorpion fails a military training mission, they are determined to prove their worth to Cabe and Homeland Security when a bomber threatens to take out the internet infrastructure of the entire Southwest.
Episode 4 : Shorthanded
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.
Episode 5 : Plutonium is Forever
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.
Episode 6 : True Colors
Team Scorpion must pass a mandated psych evaluation or face being disbanded after they're accused of destroying a priceless work of art in an attempt to protect an art exhibit. Meanwhile, Paige enlists the help of the team when Ralph is reluctant to go to his school's Halloween party. NCIS: LOS ANGELES star Linda Hunt guest stars.
Episode 7 : Father's Day
A case gets personal for Team Scorpion when three convicts break out of prison and one of them is a brilliant hacker who was forced to help the others steal billions online. Meanwhile, Paige must manage Ralph's expectations when his father returns.
Episode 8 : Risky Business
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. Scott Mescudi, a.k.a. Kid Cudi, guest stars as the gifted musician and Cliff "Method Man" Smith guest stars as a top music executive.
Episode 9 : Rogue Element
Team Scorpion must help protect Cabe's ex-wife after she uncovers evidence that suggests foul play in the death of a prominent congressman. Jessica Tuck guest stars.
Episode 10 : Talismans
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.
Episode 11 : Revenge
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.
Episode 12 : Dominoes
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.
Episode 13 : Kill Screen
Team Scorpion must help Ralph when the FBI questions him after his dark web game play inadvertently reveals the location of a CIA safe house and results in the murder of CIA operatives.
Episode 14 : Charades
Team Scorpion is tasked with uncovering a mole inside the CIA whose judgment is clouded by matters of the heart and is being coerced into stealing deadly chemicals. Also, in preparation for the case, Paige gives Walter a flirting lesson.
Episode 15 : Forget Me Nots
Team Scorpion must jog the memory of an injured former Secret Service agent who is their only hope of preventing weapons of mass destruction being launched from a secret U.S. nuclear silo. Meanwhile, Paige is torn when Drew suggests that moving to Maine might be the best for Ralph. David James Elliott guest stars.
Episode 16 : Love Boat
Team Scorpion goes undercover on a cruise ship to locate and disable deadly stolen rockets. Meanwhile, as Valentine's Day approaches, Toby and Happy help Ralph, who is in the throes of his first crush.
Episode 17 : Going South
Team Scorpion heads to Mexico when a tech billionaire hires them to rescue his kidnapped daughter. Also, feelings are hurt after Walter gives an interview and fails to acknowledge the other members of the team.
Episode 18 : Once Bitten, Twice Die
When a conflict in Eastern Europe threatens to escalate, Team Scorpion is called on to help facilitate secret peace talks to prevent World War III.
Episode 19 : Young Hearts Spark Fire
While on a mission to save lost hikers, Team Scorpion's helicopter crashes, igniting a massive wildfire that quickly closes in on them. Also, Sylvester must help their injured pilot who is unable to make it to safer ground.
Episode 20 : Crossroads
To protect a key witness who is en route to testifying against a deadly drug cartel, Team Scorpion takes her on the run, with the cartel hot on their heels.
Episode 21 : Cliffhanger
Walter finally learns Cabe's long-kept secret regarding the Baghdad mission, and it threatens to tear Team Scorpion apart forever. Also, Paige's world is rocked when Ralph puts his life in danger to help the team.
Episode 22 : Postcards From the Edge
Scorpion, torn apart and uncertain about their future as a team, must come together for their most important mission yet to save Walter's life as his car teeters on the side of a cliff.