Deep in the heart of one of Jakarta's most deprived slums stands an impenetrable high-rise apartment block. To most it is 30 floors of Hell to be avoided at all costs but for many of the city's most dangerous killers and gangsters, including the area's most notorious crime lord, it is a fortress-like safe house protecting them from the law. Even for the bravest and most experienced police officers it is considered a no-go area. In a desperate bid to flush these violent criminals and their leader from their haven once and for all, an elite SWAT team is tasked with infiltrating the building and raiding the apartments floor by floor, taking out anyone who stands in their way. Cloaked under the cover of pre-dawn darkness, the SWAT members make their move and enter the block not realising that this is the easier part of the mission. Once inside, it soon becomes terrifyingly apparent that the real problem at hand is surviving long enough to be able to get out again.