Plot summary
While Sylvester takes Ralph on an educational field trip to the beach, Paige forces Toby and Walter, who have been constantly fighting lately, into a couples therapy session specialized for business partners, but their therapist's ( Penn Jillette ) credentials are from online colleges and his methods are unorthodox. Cabe and Paige help to prepare Happy for a presentation of her newly designed airbag to a prospective client. Suddenly, a major 7.8-magnitude earthquake hits the L.A. area, causing significant infrastructure damage to the city including water main explosions and major fires. The team must work fast with limited resources to stop a broken gas main under Koreatown from exploding.
Credits
Adapted from Wikipedia contributors, List of Scorpion episodes. HTML formatting and reference markers removed.