Eleanor Rigby jumps off an NYC bridge and is fished up by rescuers. This is the story, seen from her eyes (as opposed to the two other movies in the trilogy - Him and Them), of the time after the jump. She's picked up at the hospital by her sister, Katy, and driven to her parents' (Mary and Julian) house.
What now? She signs up for identity theory class at NYU, where her dad teaches. Her unofficially ex husband is also taking the class so she runs out. When following her out, he/Conor gets hit by a car. She sits with him until the ambulance arrives.
Her dad tries, to no avail, make her see a therapist. Eleanor befriends her female teacher. Eleanor babysits her nephew while Katy's on a date. Eleanor thinks back at the time with Conor.