Tully is a 2018 American comedy-drama film directed by Jason Reitman, written by Diablo Cody, and starring Charlize Theron, Mackenzie Davis, Ron Livingston, and Mark Duplass. The film follows the friendship between a mother of three and her night nanny. It is the third collaboration between director Jason Reitman and screenwriter Diablo Cody, following the films Juno (2007) and Young Adult (2011), the last of which also starred Theron.

Plot

Marlo is pregnant with an unplanned third child with her husband Drew. They have a daughter, Sarah, and a son, Jonah, who has an undiagnosed behavioral disorder. Trying to reduce his sensitivity to external stimuli, Marlo brushes his skin nightly. Craig, Marlo's wealthy brother, offers to pay for a night nanny as a baby gift, but she rebuffs him. Marlo has dreams of an underwater mermaid, and also of her son's tantrums.