Lennon Carter is a single mom of a 3-year-old son, Beckett. Harry Styles is a single dad of a 2-year-old son, Arlo, and a 4-year-old daughter, Aden. They both decide to take their kids on a family vacation to Hawaii. When they cross paths Lennon can't keep her eyes off of the man that always seems to be around. Vacation romances may be fun in the moment, but what happens afterward?