After an illegal party in an abandoned Diagon Alley warehouse, dozens of Hogwarts students from all four houses use a broken Floo Network to return before curfew. When the flames burn red instead of green, they ignore the warning and jump anyway—only to wake up in a vast, hostile dormitory resembling the Squid Game universe. With no prize and no escape, survival becomes the only rule, forcing friendships, loyalties, and house identities to be tested under deadly pressure.