Derek and the attendings go out to celebrate when he gets the grant he needs for his clinical trial; Meredith and Alex must fend for themselves during the night shift.
A cyber attack creates chaos in the hospital. Meanwhile, Drew draws on his medical and military training to treat a critical patient, and TC joins on a SWAT drug raid. Also: TC contemplates returning to Syria to tie up loose ends.
Tanner decides to use a crowdsourcing platform to try and solve a murder case, as a user provides vital information that could lead to the killer.