If a warrior fails in his mission and is captured by the enemy, it not only hurts his pride. - Not only their well-trained bodies, but also every organ of a woman is devoured, and their reason and spirit are torn to shreds by the beasts...However, these beautiful female mercenaries bravely join the enemy organization in order to crush this unforgivable evil. - Invade. - Thus began a hellish epic filled with fierce battles and merciless brutal torture. - Directed by Yuta Shinonome with all his might, the first part of an unprecedented epic story in AV history!