Emma is a time-traveler. Killian is always waiting for her to return.

To protect her son, Emma secretly writes letters to him as his seafaring 'father'. But when the illusion starts to fall apart, she has two choices. Tell Henry the truth, or hire some guy to pose as his dad for a day. She chooses the lie, not knowing she'll change three lives forever; hers, her son's, and the stranger who finds he doesn't want just one day. He wants forever.