Sheldon butts heads with Dr. Lee, a new scientist in the lab; Mary is given a lotto ticket.
Rachel's career is obstructed by her boss, Joanna; Monica faces a big decision; Chandler, Ross and Joey party.
Jerry thinks his girlfriend (Kimberly Campbell) has a fungus; George converts to the Latvian Orthodox religion.
Monica feels that Rachel is trying to steal the spotlight from her engagement; Chandler worries about his performance in the bedroom.
Boden, Kidd and Severide work together to protect one of their own; at the Fire Academy, Herrmann meets an inspiring young man; talk of the annual CFD Gala dominates the firehouse.
Harvey and Louis fight to protect the future of the firm from its past; Alex worries Mike's instincts could risk a client relationship; Donna and Harvey delve into the aftermath of their kiss.
Jerry and George produce their pilot, but George doesn't like the actor playing him; Kramer has a personal problem.
Neville confronts Jackie about loaning Dan money; Darlene attempts to play matchmaker for Mark.