Aachi and Ssipak is a delightfully wicked piece of animation. It's full of fun, and politically incorrect, full of high octane action, and set against a nonsensical background in the future. It's rude, vulgar, and totally unapologetic about it.
In the future, humans have learnt how to harness human shit to become rich sources of energy. As a result, the government encourages everyone to shit and collect their waste to power our world. To reward its population, those who shit are given juicybars as rewards when they do their business at designated collection points. However, these juicybars (they look so phallic when being sucked upon) are addictive, and here you have a black market churned from obtaining and selling these bars. With gangs, one of the most notorious ones called The Diaper Gang, come forth to wreck havoc on the populace, and with the authorities not going to sit back and do nothing, they unleash their cyborg policeman Geko to take them down, violently.
And all these happen in the first 5 minutes. Like I said, it moves at breakneck speed, infused with comedy and various pop movie references galore, ranging from Pulp Fiction and the Untouchables to the obvious Robocop, and a sequence taken straight out of Indiana Jones and the Temple of Doom. If you thought that the Koreans had the most ultra realistic and violent movies in their crime genre, this is also brought over to the animation field, with this movie a showcase just how violent a cartoon can be - heads get shot off constantly, and various dismemberments happen so often, you'll start to want nothing less than a swift violent end for its characters, in particularly the members of the Diaper Gang, who serve as disposable fodder.
So where does Aachi and Ssipak fit in you say? They're small time hoodlums who discover a girl called Beautiful (whom I thought was anything but), who has the capability to shit and be rewarded bucketloads. As small time hoodlums, they see this as a get rich opportunity, and it becomes like a round robin hide and seek game amongst all the players involved.
There are plenty of shit jokes and references, coupled with tons of swearing and showing of bad signs (middle finger, thumb in between fingers, the flipping of the forearm, etc), and probably served as direct insolence to both the gangsters as well as to the V for Vendetta like fascist government and their polices.
If you like your animations vulgar, fun, full of action and violence, then Aachi and Ssipak will be right up your alley.