Brian Tichnell

A massive tsunami hits the Santa Monica Pier in Los Angeles and places Buck and Christopher's lives in danger. The first responders must do everything they can in order to save as many lives as possible.

Athena, Maddie, Bobby and the 118 race to save as many lives as possible after a massive tsunami hits the Santa Monica Pier in Los Angeles, and Buck fears the worst when Christopher goes missing.

While the team investigates the murder of a toy company CEO, Castle uncovers a lead to his mysterious disappearance, launching him into a dangerous investigation of his own.

The Pied Piper guys are wined and dined by every venture capitalist under the sun, while Monica adjusts to a new managing partner at Raviga as the company faces major changes.

Erlich wants to testify when Pied Piper and Hooli enter binding arbitration, but Richard worries that his rival's claims could have merit. Meanwhile, Jared, Dinesh and Gilfoyle debate a philosophical theory, and Big Head gets a boost.

After being unceremoniously fired, an angry Richard faces a tough decision: accept the diminished role of CTO, or leave Pied Piper for good. At Hooli, Gavin tries to improve his image by admitting failure, and Big Head gets wind of major changes.