Amir M. Korangy

After Mateo and Cheyenne disagree on how to celebrate her 21st birthday, Cheyenne enlists Bo's help; to Garrett's chagrin, Glenn plays matchmaker to help Jerry and Sandra complete their family; Dina tries to help Amy keep a big secret from Jonah.

Team Scorpion help Paige's estranged mother when she accidentally stumbles upon a forgotten nuclear reactor that's close to exploding.

On a mission to protect the Global Seed Vault in the Arctic, the team encounter a problem when Happy, Cabe and Sylvester start experiencing life-threatening, fear-based hallucinations.

The team must save Happy's friend Ada after a compromising storm that threatens her immune system. Ada lives inside a sterile bubble that is jeopardised by the debirs left by the storm.

Jonah suggests Amy stock up on baby supplies by holding a small baby shower, but things soon get out of hand; Mateo directs Dina's Christmas card photo shoot.

Glenn has a difficult time when Kelly requests a transfer to another store; Jonah and Amy go to new lengths to keep their relationship secret; Cheyenne suggests a workplace carpool.