The future after decades from now. GST, a healthcare company that has created an intelligent life form “seal” by chance, while developing artificial skin, blood, organs, artificial limbs and other human tissues for transplantation, will replace this with new machinery , We aim for commercialization as military force.

However, as a result of infinitely absorbing knowledge, the prototype EM – AA (Emma), who got out of the hands of human beings, got away from GST and happened to break away from the research building. GST, afraid that the new product that was taken on the fly would fall into the hands of other companies, launched the battle seal NE – 11 (Nell) he had studied for some time, hid himself somewhere in this facility I command you to capture Emma.