A high-risk lung transplant pushes the surgical team to their limits. Meanwhile, Bailey juggles a trauma patient whose treatment hangs in the balance, Lucas' war with Wes begins to impact his decision making, Teddy takes her mind off things by assisting Jo with car sale negotiations, and Kwan gets off to a rocky start with new plastics fellow Dr. Mohanty.
When a woman in active labor is abducted, Rollins and Curry look to her doula for an account of events. Carisi tries to get a confession in front of the jury. Benson looks to the past for answers on a personal matter.