Defenders of Dynatron City

You are a group of repairman, who are superheroes now because of coca-cola produced by evil Doctor Mayhem. Doctor wants to mutate all people proposing to them his cola, but you want to prevent this plan killing his robots and finally stopping the Doctor. When the game starts, you choose your character and some others join you in your case. If your character will be captured, you can choose another one, while nobody is left.