Kate Pierce, now a cynical teen, is unexpectedly reunited with Santa Claus when a mysterious troublemaker threatens to cancel Christmas - forever.

The killer known as Holiday continues to stalk the Falcone crime family while a new class of costumed criminal rises in Gotham City. Batman suspects that a former ally might be the serial killer.

A socialite with aspirations of a career in show business bets her wealthy uncle $25,000 that she can say "no" to everything for two days straight, hoping winning will help her fulfill her dreams.