It's time for the annual Hero of the Year ceremony and the students of Super Hero High compete for the top prize. But the festivities take a turn when Dark Opal targets the heroes and steals some of their most valued possessions to form the ultimate weapon! It's up to the students at Super Hero High to spring into action! But can Wonder Woman, Supergirl, Batgirl, Harley Quinn, Katana and Bumblebee stop Dark Opal - and his mysterious partner-in-crime - to save the day?