The world is attacked by a zombie virus that makes everyone have to hide and find a safe place, your father is a technology scientist. He always spent his time in the basement doing various research, until he finally died. You feel sad because you lost your only remaining family, You decide to clean up the basement since it has been neglected for a month. When you enter, you see various cool tools and robots. Until you see a human robot that looks perfect, you examine the robot and see a note that your father left. The robot is named Dean, a robot equipped with weapons and specially programmed to protect and obey its master's orders.