Garth Callahan has almost no chance to see his daughter Emma grow up: make friends, fall in love for the first time, dance at the prom. He doesn’t know how many more days he will spend with her and his beloved wife. But he has found a way to stay connected with his loved ones every day, even if he can’t be there in person. Until school ends there are 826 days, and each day Emma will receive a note on a napkin—no matter what happens.