After getting dumped on Christmas day, high school boy and hopeless romantic Natsuki Hashiba crosses paths with Anna, an aloof girl in a Santa outfit passing out tissues. For him it's love at first sight, for her... not so much. With help from his best friends-a playboy, an otaku, and a nice guy with a sadistic streak-Natsuki sets out to win Anna's heart and heal his own heartbreak along the way.