A long time ago, one guy was practicing the arts of reviving the dead. People got scared of him, so they killed him. However, this guy rose from the dead and start killing people. The people that he killed soon rose back from the ground and start to do his bidding. In this game, you need to destroy the farm to be able to get some skulls. Skulls can upgrade yourself and be able to summon zombies. The game would be harder as you make some progress. You don't need to intervene, but it would be faster if you would help the zombies destroy the houses.