Overview
Save the Green Planet! (Korean title: 지구를 지켜라!, Jigureul Jikyeora!) is a South Korean science fiction comedy film written and directed by Jang Joon-hwan, released on 4 April 2003. The basic story begins when the main character, Lee Byeong-gu, kidnaps another man, convinced that the latter is an alien.
Plot
The film's main character is Byeong-gu, a man who believes that aliens from Andromeda PK 45 are about to attack Earth and that he is the only one who can prevent them. With his childlike circus-performer girlfriend Su-ni, he kidnaps a powerful pharmaceutical executive Kang man shik whom he believes to be a top ranking extraterrestrial able to contact the Andromedan prince during the upcoming eclipse. After imprisoning the man in his basement workshop, Byeong-gu proceeds to torture him(he initially attempts to nullify the alien's transmitters using a korean liquid painkiller mulpas(물파스), which contains chlorpheniramine maleate and a "Italy towel" used by korean Ttaemiris.)
It soon seemingly appears that the executive's company poisoned Byeong-gu's mother in a pharmaceuticals test, and that it is vengeance fueled psychosis that causes Byeong-gu to believe the executive is an alien.
When a detective comes calling to investigate the disappearance, the executive tries to escape but is thwarted by Byeong-gu. The detective at first finds nothing unusual thanks to Byeong-guy’s attempt to hide it, but on his way out sees Byeong-gu's dog (appropriately named Earth) gnawing on the leg bones of his master's past victims. After contacting a partner in the police force he is killed by Byeong-gu's bees, then hacked up and fed to the dog. Byeong-gu then crucifies the executive and breaks his leg with the back of his axe, to punish him for his attempted escape. In a desperate move, the executive convinces Byeong-gu that the bottle of benzene in his car trunk is the antidote for his comatose mother.
From Wikipedia (CC BY-SA 4.0).