Under attack by their great enemy, find a siren to collect a last-ditch plan to keep his team-and your ship-together! With their memories of each other and themselves still hazy, sirens must re-learn how to work together before Naida destroys them all.

Under attack by their great enemy, find a siren to collect a last-ditch plan to keep his team-and your ship-together! With their memories of each other and themselves still hazy, sirens must re-learn how to work together before Naida destroys them all.

Under attack by their great enemy, find a siren to collect a last-ditch plan to keep his team-and your ship-together! With their memories of each other and themselves still hazy, sirens must re-learn how to work together before Naida destroys them all.

In the hidden fortress at the North Pole, the greatest heroes of the past time to live secluded from the world, which rejected them. But when their benefactor, the mysterious scientist known only as Professor kidnapped, it's up to the boy to rally robots, monsters and superheroes in the fortress to come to the rescue as nuclear Legion! From the