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.

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.

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.

Team Scorpion must jog the memory of an injured former Secret Service agent to prevent nuclear weapons from being launched. Meanwhile, Paige is torn when Drew suggests that moving to Maine might be the best for Ralph.

A tech billionaire hires Team Scorpion to rescue his kidnapped daughter. Meanwhile, some feelings get hurt when Walter gives an interview and fails to acknowledge the other members of the team.

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.

Team Scorpion goes undercover on the “Super Fun Guy” movie set in Kazakhstan in order to disable a soviet era nuclear missile being sold by terrorists.

Team Scorpion helps the CIA locate a top-secret aircraft in Area 51 in order to raise money for Walter's research to save his sister's life.

Team Scorpion goes undercover at a university to find a hacker who infiltrates the Federal Reserve and threatens to collapse the world economy.

Sylvester comes face to face with his estranged father, a retired general, who asks Team Scorpion for help when he believes that a dictator in Africa has uncovered a deadly World War II-era weapon of mass destruction and intends to use it.

While Team Scorpion works to stop an influx of drugs being smuggled into the country via drones, Walter gives Happy and Toby an ultimatum on their new relationship.

While on a secret mission in Djibouti, Africa, with his new Homeland protégé, Tim Armstrong, Cabe is captured and Team Scorpion must save him.

Before Halloween, Team Scorpion must infiltrate a deep, vast cave system in order to prevent a bat population from destroying the North America ecosystem. Also, the team dons costumes to stage photos from Halloween’s past for Walter’s upcoming immigration inspection.

Paige’s estranged mother calls on Team Scorpion when she accidentally uncovers a forgotten nuclear reactor on the verge of exploding.

When a mission in the desert results in exploding shrapnel that seriously wounds Cabe, Team Scorpion must freeze his body in order to save his life.

Team Scorpion’s job to find sunken treasure goes awry when Walter and Paige’s boat explodes, leaving them lost in the middle of the Pacific Ocean surrounded by sharks.

Following a severe storm, Happy’s friend Ada, who lives in a sterile bubble to protect her compromised immune system, is left with dangerous debris on the verge of puncturing the structure. Now, Team Scorpion works to safely move Ada to a more secure location without risking her life.

Team Scorpion must defy the orders of a foreign government after they retrieve an asteroid from space containing DNA strands that could have deadly consequences once exposed.

While en route to Toby and Happy’s honeymoon, Team Scorpion’s plane crash lands on a remote deserted island, leaving them all with little hope for rescue.

Team Scorpion continues to work with their nemesis, Mark Collins, in order to prevent an extinction event that could end humanity. Also, Cabe’s last-minute decision while on the case leads to the possible end of his career.

While attending a tech convention, Team Scorpion is taken hostage by a group attempting a virtual heist.

For Sylvester’s birthday, Team Scorpion visits a renaissance festival, but the revelry is cut short when a group tries to rob a nearby police evidence locker. Also, Paige grows weary of Walter’s play-by-play of all the historical inaccuracies at the festival

As Team Scorpion anxiously awaits the verdict of Cabe’s trial which could send him to prison, they focus their nervous energy on trying to save a dog stuck in a cistern.

A solar storm knocks out power in Los Angeles, and Team Scorpion must help a teen pilot and his girlfriend who are lost over the Pacific without navigation or radio contact. Also, during the crisis, Walter must look after a group of Ralph’s classmates, and Cabe tries to tell Allie finally that he loves her.

The geniuses of Team Scorpion turn into knuckleheads and Paige must simplify the science for them, when their mental faculties are impaired during a job to prevent the creation of a black hole. Also, Florence and Sylvester grow closer when she helps him with a special project.

Team Scorpion must use their high IQs to win a softball game when the homeland director challenges, with all of their future government contracts on the line. Also, Walter’s secret night out with Florence puts Toby and Happy on edge.