Based on Batman the Animated Series' Mask of the Phantasm motion picture.  Andrea, Bruce's ex from his college years, returns as does her father?  And who's killing members of the mafia? And why is Kyodai Ken working with ...Lex Luthor?  And whose side is Catwoman on?  And what's the mysterious Organization Mr. Freeze and Penguin joined?  Can Batman work out his past with Andrea and work together with his Gotham Knights to fiht off all of these oncoming threats along the way?