Young Justice: Sins of Youth (2000)

A media storm in Gotham intensifies the scrutiny on Young Justice. Simultaneously, the veteran heroes of Old Justice and the clandestine Agenda initiate a coordinated physical assault. The resulting conflict triggers a catastrophic, city-wide transmutation. The teenage members of Young Justice are suddenly thrust into adult bodies, while the experienced champions of the Justice League find themselves regressed to adolescence. This forced exchange of roles creates immediate tactical chaos across every battlefield. Established power dynamics are rendered useless. The city’s skyline is now filled with unfamiliar figures grappling with their new, unstable forms.