When Mike's class action hits a snag, it might cost him more than the case; Harvey, Louis and Rachel consider getting their hands dirty; and Donna and Benjamin seek an investor.

Harvey butts heads with his partners over a bold move. Mike pursues a pro bono case with the legal clinic. Donna's actions raise tough questions at the firm.

Mike juggles his work obligations with his promise to help a family; Harvey asks for Louis's discretion in a sensitive matter; Donna vets a possible addition to the firm.

After their power move gets countered, Mike and Harvey end up with their backs are against the wall. Rachel worries about her father's clouded judgment. Louis helps Alex.