Plot summary
When Mexican drug runners start to use armed drones to smuggle extremely pure bricks of heroin across the border, Scorpion is tasked by the Policía Federal Ministerial to find a way to stop them. Walter and Toby continue their therapy and Dr. Rizzuto makes them use sock puppets to express their feelings. After being rejected by Jeopardy, Sylvester memorizes product pricing in order to be on The Price Is Right. Meanwhile, Toby and Happy's private relationship becomes public, leading Walter to issue them an ultimatum based on his rule against intra-team fraternization; either they break up or one of them leaves the team.
Credits
Adapted from Wikipedia contributors, List of Scorpion episodes. HTML formatting and reference markers removed.