Murtaugh and Riggs paghahanap for the culprit of a local jewelry heist. Meanwhile, Murtaugh gets called “grandpa” sa pamamagitan ng another parent while at the playground with Harper, sending him into a tizzy, and Riggs deals with withdrawal from drinking

When Detective Bailey's sister, Jess , runs into trouble with the law, Bailey must decide how far she's willing to go to protect her family. Meanwhile, with Trish away on a company retreat, Riggs deals with the fallout of a night of heavy drinking