Murtaugh and Riggs search for the culprit of a local jewelry heist. Murtaugh gets called ‘grandpa’ by another parent while at the playground with Harper, sending him into a tizzy….

After the city’s gun buy-back program is robbed, the team is on a hunt for those responsible. Murtaugh walks on thin ice with Trish. Riggs finds an unlikely friend in…