The Suicide Squad 2 opens with a tense briefing inside ARGUS headquarters, where Amanda Waller coldly informs a newly assembled Task Force X that time is running out. Their mission: infiltrate Jötunheim, a Nazi-era prison and laboratory hidden on the isolated island of Corto Maltese, and destroy it before a rogue regime converts its deadly experiments into weapons. Expecting a quick operation, the squad remains unaware that chaos lurks beneath the surface.

As the squad—made up of returning members Harley Quinn, Rick Flag, and Captain Boomerang, alongside newcomers like Bloodsport, Peacemaker, Ratcatcher 2, Polka-Dot Man, King Shark, and others—lands on the island, the stark beauty of Corto Maltese belies the horrors to come.

Their diverse personalities spark friction: Bloodsport, driven by guilt over his daughter’s fate, bristles under Peacemaker’s self-righteous bravado; meanwhile, Harley slides easily into chaos, destabilizing fragile alliances amid clownish humor and unpredictable impulses.

Venturing into the underground structure of Jötunheim, the squad discovers evidence of human experimentation and political prisoners—the ghostly remnants of a dark past. As eerie machinery hums and corridors twist, a deeper threat emerges: Project Starfish, designed to birth the monstrous Starro, now stirring from its slumber. The mission’s stakes escalate from sabotage to survival.

In the heart-pounding middle act, Tolkien-level carnage erupts: Starro breaks free, and soldiers and squad members alike are assimilated. Polka-Dot Man, vulnerable yet ironically immune to the alien threat, becomes pivotal in reducing Starro’s power—at the cost of his own life.

Ratcatcher 2 and King Shark fight with unexpected valor, as Bloodsport and Harley scramble to recover incriminating intel to expose Waller’s hidden motives. As the island crumbles under Starro’s growing dominance, survivors rally in a desperate gambit: Rick Flag leads a final push to rig explosives, expose Project Starfish, and dismantle Waller’s manipulative schemes. Ally turns on ally, secrets erupt in brutal confrontations, and Peacemaker is set on a collision course with Flag—a confrontation that leaves lasting scars. The film concludes in fiery ambiguity: Starro’s destruction leaves the island in ruins.

Survivors—bloodied, broken, and changed—stagger toward rescue. Waller recaptures—or so she claims—some operatives, keeping the cycle of control alive. Yet against the scorched ruins is a silent testament: sometimes the worst threats emerge not from monsters alone, but the systems that weaponize them. The credits roll with quiet dread: Task Force X may be broken, but the hunt never truly ends.