Ty goes undercover to search for a gun trafficker, but nearly blows his cover by breaking a crucial rule and seeing his wife on her birthday. Carter must come up with $100,000 to keep Ty's mission protected...and to save his life.

Ty and Dean work together to stop a tough Korean mob boss, but tension grows between the two undercover men as Ty approaches the case with caution and Dean adopts a rash, straight forward attack.

The team goes deep behind the scenes to stop a crime ring which has a big diamond heist planned, with Dean and Jammie pretending to be a married couple to get closer to a major player. Meanwhile, Ty reconsiders his dangerous job after Melissa informs him she wants to start a family.

Ty's conscious is hit hard when the undercover crew goes in pursuit of a crooked, yet decorated cop, particularly when Ty's wife floors him with big news.

A turf war between two feuding gangs is the area where the covert team penetrates. One gang is a new group which plans on taking over the heroin business. In other developments, Ty's sister is in need of $7,000, which neither Ty and Melissa can afford.

A smuggler runs the biggest ring on the West Coast; Jaimie goes under cover by hooking up with an old acquaintance from her past; Jaimie asks her boyfriend for a favor.

In the first season finale, Carter becomes the prime suspect for the murder of an undercover officer. Meanwhile Melissa keeps pushing Ty to quit his job and start a family and Jaimie gets the news that Scott gets a new job in San Francisco. Sasha Alexander of NCIS fame guest stars.