A terrible car accident destroyed not only Claire (Jennifer Aniston)'s appearance, but also her beloved son. After that, Claire, who was deeply trapped in despair and pain, suffered from chronic pain. In order to fight the disease, Claire came to the chronic pain club, and gained confidence and hope to live through mutual communication and encouragement with fellow patients. Nina (Anna Kendrick) is a member of the club. One day, the news of her suicide shocked Claire. Claire tried every means to find the truth about Nina's suicide, and finally even fell into the illusion of talking to Nina and couldn't extricate herself. At the same time, Nina's husband Roy (Sam Worthington) also appeared beside Claire, dragging Claire into one whirlpool after another.