White House and Jackpot investigate a man (Richard Kind) who thwarted a bank robbery and uncover more things about the man's life. McLaren's father (Robert John Burke) visits the precinct and discourages him from dating Michelle, T-Rex's sister. Lazarus finally apprehends the wanted man with the shamrock tattoo on his neck, but fears he may face the consequences for not reporting him when he saw him days earlier.
A teenage boy creates a bomb and puts it in his backpack, which is switched with a teenage girl's, with Lazarus and McLaren on the case. Sanchez and White House come across a missing child case involving a woman who was once a drug addict wanting back the custody of her son, who is now under the care of a wealthy woman (Samantha Mathis). Jackpot and Ahmad are in charge of a prison transfer, until their transfer vehicle runs out of gas.