The hell kitties have invaded the planet through a portal and the baby needs to fight off the kitties. The baby must use both melee and ranged attacks to fend off the kitties since the kitties have stronger melee attacks. Because the baby does more ranged damage, the baby can pick up items such as rubber ducks to throw to do more damage to the kitties. Players will lose if they decide to not use ranged weapons. Other items such as milk bottles can be picked up to heal the baby. In some levels, there is cover that the baby can use to protect himself. The cover can be destroyed by the kitties if they've attacked it enough. As the game progresses, the kitties become stronger, doing more damage and having more health. The last level is against a giant boss kitty with some of its minions. After beating this and nine previous levels, the baby finally has defeated the kitties.