Since studios have made a “No big 3 rule”, here’s my idea:
We have Green Arrow and Black Canary (Alpha Couple), Atom (the geek, comic relief), Captain Marvel (paragon), Hawkgirl (brusier girl) and Martian Manhunter (the lone wolf), GA and BC have been fighting crime along in Coast City for five years, but the crime rate goes up and suddenly villains come stronger, so one day, a kid gets hit a lightning and sent to hospital (Billy Batson here it is), this event brings two aliens from different planets to investigate the mysterious phenomena (Hawkgirl and Jonn), in the Hospital, some alien tries to take Billy away, so he starts screaming, and suddenly he screams “SHAZAM!”, BAMF, Cap is here, he starts getting justice done, and HW fights him, then, another alien race (white martians) come to wipe Earth, they uncover Jonn and he says “no fucking way, bitch”, get together, and save the Earth-1, until we see Apokolips :D
Also, cameos everywhere, Blue Beetle and Booster Gold, the Teen Titans, Supes, Bruce and Diana.
