Character Profiles

One starry night, 12 perfectly normal teenage humans are pulled from their beds and get transported to the cosmos. They discover that 'oh, they're not so normal after all' and develop abilities and powers they have never known about before. During their training, however, their world is threatened by a dark force.
Will these 12 zodiacs be strong enough to defeat it?
Or will Earth-and the entire universe-collapse with it?