Owen tries to teach the doctors a lesson in teamwork when he signs them up for a baseball league; Lexie can't hide her jealousy when she sees Mark with another woman
After being blackballed door most of the surgeons, Meredith uses Lexie to spark Derek's interest in her patient's rare brain tumor case and, in secret, gives guidance to April with Bailey's clinical trial;
The doctors of Seattle Grace are called upon to man up when a stampede at a comic book convention causes an influx of colorful characters in the ER blurring the lines of fantasy and reality
