In a society where real estate hegemony, collusion between officials and businessmen, and the disparity between the rich and the poor have become the main themes, some people choose to remain silent, while others insist on fighting. A dropout master student, Long (played by Kwan Chu-yiu), robs a bank with a bomb, intending to accuse the society of robbing the rich to help the poor. Unexpectedly, the exit was accidentally blown up, and Long and the hostages - detective Kin-ho (played by Wong Ka-chun) whose career has come to an end due to eye disease, bank employee Yun-yi (played by Kay Tse) who has lost her integrity in the workplace and love, the infatuated and mismatched divorced lady Rebecca (played by Maggie Chan), and retired teacher Tak-shu (played by Teddy Robin), who is tireless in teaching but has been eliminated by the times, are trapped in a bank that looks like a secret room. Five sections of the floating city's lamentations are intertwined, so where will the case go? Will these five bombs that are about to explode become a new starting point for a fresh start, or will they lead them to the end of their fate?