This work is a fantasy short drama blending another world adventure, devouring and evolving, and counterattacking revenge. The young girl Kelly time-travels to become a colorful slime, but is stripped of her talent by the genius magician Ares, reduced to a dying F-grade monster. In a desperate situation, she awakens the devour and evolution system, growing all the way with wisdom and formidable skills, and joins hands with the assistant magician Glenn to get entangled in the demon invasion crisis. With the contrast between a cute appearance and powerful combat strength, combined with humorous roasting, passionate battles, and identity reversals, the work tells the story of a weak life breaking prejudices and reclaiming its destiny.