When Riggs visits his father-in-law in prison, a walk down memory lane reveals an old secret about his deceased wife. Meanwhile Murtaugh tries to impress Captain Avery, and, united by the death of a mutual friend, Trish and Leo Getz try to solve a murder.
When the flight is overbooked, the crew must find a way to get passengers to give up their seats without using force. Nichole makes a killing selling snacks while the flight is on hold, Artem argues with an unexpected seatmate.
After Jimmy purchases an old beat up car from a police auction, he and Mickey accidentally lock Ben inside. Meanwhile, Alba catches Chip secretly pretending to be Sabrina's online crush and she encourages him to keep it going.