After getting kicked out of his first adventuring party, one man is ready to give them a mother of a time with his brand-new MILF party! Get ready for hot moms and revenge in this fantasy isekai tale! Ceres thought his life was over after being abruptly kicked out of the Hero's party by the arrogant Hero Zect. Alone and dejected, he stumbles upon an unusual slave market, where he finds none other than the Hero's own mother, Shizuko! Ceres has a thing for older women, and realizes that this is his chance to achieve a lifelong dream: Assembling a harem of MILFs!