Luka, Abby, Morris, and the team treat the victims of a collision between a big-rig and a family car, including the wife of the truck driver and the son of the car's driver. Sam celebrates her birthday in the ER and meets a photographer who changes her outlook on life. Neela and Ray share some subtle signals. A medical student shadows Gates. Wedding plans continue as Luka and Abby try to decide where to be married and how to cope with a too-helpful Morris and Hope.