Since she was six years old, Clare has had an imaginary friend: a kind and funny man, sometimes old, sometimes young, who appears in the woods behind her house and tells her tales of the future.

After a rocky `first' meeting, Henry and Clare try to reset with a second date, but she still struggles to rectify this Henry with the man she knows and loves. Henry takes Clare back to the most formative moment of his childhood.

As Clare laments her linear lifetime and the unpredictability of her soulmate's appearances, a teenage Clare turns to Henry for help.

Clare invites Henry to a dinner party, but when it's crashed by another Henry, secrets are spilled. Meanwhile, Clare tries to make her 18th birthday perfect.

Henry is finally able to get to know Clare's family better when he visits her childhood home for the first time. Henry and Gomez's friendship isn't going as they imagined.

As his wedding with Clare approaches, an increasingly stressed Henry finds unexpected solace in his estranged father.