Book is a single father, a tech whiz buried in code and coffee, just trying to get his life back on track after years of being everything for his son. Joong is a young, professional manny with sunshine energy, a soft spot for plushies, and a resume full of messy families he's helped heal. When Joong becomes the nanny to Book's son JC, he's supposed to just be another hired helper. But hearts don't follow schedules. And Book soon finds himself wondering: could the man who taught his son to laugh again be the same man to teach him how to love?