Ojisan Tengoku plot
Haruo Maekawa earns his living by fishing for squid. Haruo is obsessed with the legend of a giant squid that seems to live in Tokyo Bay, and is determined to catch it. Haruo's uncle Takashi is living with him for the time being because he is not doing well. An energy drink addict, Uncle Takashi seduces every woman he meets, including Haruo's girlfriend Rika. After a sexual conquest, Takashi writes his name in red on the woman's back. While praying at a Shinto shrine, Takashi is bitten in his scrotum by a poisonous snake and dies. Uncle Takashi is doomed to spend the afterlife in Hell unless Haruo and Rika can save him from the hands of the King of Hell.