Under the city there is an old ruin containing biological weapons from the old era. These weapons have been asleep but now they are starting to wake up. To avoid that these biological weapons comes up into the city the military have decided to take action. The hero (who can either be the boy Emilio or the girl Bertha) is a new type of biological weapon (the “α-BLOOD”) developed from the technology found in the ruins. The player must now venture into the ruin and kill off the old bio weapons.
From the in game menu the player can choose desired action: Plan for the week, train, buy weapons and so on. Training and buying weapons requires money and money is earned by killing enemies in the ruin below the city. For every level in the ruin a certain number of fights must be won before the player is allowed to enter the next level. In the ruin the player has two bars at the bottom of the screen: HP and ST. HP is health and ST determines how many time he/she can use selected weapon. Once any of the two bar reaches 0 the player is kicked out of the ruin.
This game is similar to Abarayas earlier game Idiots.
