Save the Green Planet! (2003)

Aliens from Andromeda are preparing to take over Earth – or at least, this is what Byeong-gu, an unstable conspiracist with a penchant for violence, believes. Byeong-gu kidnaps a pharmaceutical executive, convinced that the man is an alien commander with the means to foil the impending invasion. What follows is a violent and surreal descent into madness, culminating in an inexplicable final encounter of the third kind.