Teen Titans is owned by DC/Warner Bros/AT&T.
Trigon came through and the world is ending. Old heroes die but new heroes rise to challenge to stop Trigon.
Inspired by 'Next Avengers: Heroes of Tomorrow' (2008).
In your current time they build a time machine. They send you 24 hours into the future.
What they don't know is what goes missing has to get replaced and when you went forward something came back.