26-year-old Ethan Moore has been haunted by his girlfriend Claire’s sudden disappearance. One night, she leaves their newborn son Leo on his doorstep. Clueless about childcare, he hires 22-year-old Nico as a nanny. Having raised his sister alone, gentle Nico holds the broken family together. They fall in love, overcome prejudice and past wounds, and build a lifelong family.