A simple act of kindness always sparks another, even in a frozen, faraway place. When Smeerensburg's new postman, Jesper, befriends toymaker Klaus, their gifts melt an age-old feud and deliver a sleigh full of holiday traditions.
Santa's daughter must take over the family business when her father retires and her brother, who is supposed to inherit the Santa role, gets cold feet.
A whirlwind holiday romance builds as cynical Dash and optimistic Lily trade dares, dreams and desires in the notebook they pass back and forth at locations all across New York City.