When Levi Holt's unmarried sister dies unexpectedly, she leaves him with a lot of grief—and custody of her six-month-old son, D.J. An architect with a demanding career, Levi knows nothing about child care—but he's got to learn fast. He also has to keep D.J. from derailing his career.

Corinne Lanier doesn't want to derail Levi's career, but she wants him to come up with a new design for her boss's vacation home in the hills of western Connecticut. Having grown up in a series of broken homes, Corinne doesn't have much faith in love or family stability, and she doesn't have much patience for an architect with a cranky, teething baby on his shoulder. Yet Levi and D.J. somehow erode Corinne's certainty about what she believes in—and what she wants.

With love, lullabies and a few desperately needed classes at the Daddy School, Levi might figure out how to put the fragmented pieces of his life back together. But will there be room in it for Corinne? And can he be certain Corinne loves him for himself and not for his precious little baby?