All hell breaks lose when Frank loses a perp inside the precinct; Mike stumbles on the perp (who doesn't speak any English) and is taken hostage at gunpoint; Ruben and Al are sent on a mysterious mission.

The squad rushes out to sample the services at a massage parlor to make sure it's legit; Jan's collar, a homeless man, turns out to be a high school classmate; a grateful senior citizen has designs on Ruben.