 In Tokyo, the dysfunctional friends Nimura and Mamoru work in a laundry of towels in part time. Nimura sees a bright future only in dreams, and Mamoru is adapting a venom jellyfish in fresh water. Their boss likes them and gives a bonus and proposes a full time work for them. Mamoru kills the boss s family in a attack of rage without any reason and he is sentenced to death. Nimura keeps the jellyfish and releases it in a canal of Tokyo. Meanwhile, Mamoru s father comes to Tokyo for the funeral of his son, and Nimura stays with him, while the jellyfishes threatens the population of Tokyo.