Li En is reincarnated as a useless magical cat, abandoned due to her poor talent. Fortunately, she is rescued by a kind older sister, and repays her kindness with her own body. The useless cat unlocks an overpowered cheat ability, completing its goals to unlock skills. Massive amplification passives are fully covered, and active skills have maximum effects. ... Elaine: "Don't ask me why my spells can be cast without casting, penetrate resistance, and have 100% critical hit rate. Go tell my cat." Li En: "Meow!"