While Alicia races against Louis Canning to round up the most clients for an Erin Brockovich-style class action lawsuit, a mole is detected in LGB law firm, who seems to be working for Canning.

Tensions run high as the entire Florrick family is crammed into Peter's campaign bus with Eli and Ruth on their way to the Iowa Caucuses. Once there, Peter attempts a high-risk political stunt to gain votes for his presidential bid.