Su Chen transmigrated into a high-martial world where everyone awakens powers. At the start, he awakened the S-grade dark attribute "Shadow Monarch", but was asserted to be weaker than ice, thunder, and fire, fit only for sneak attacks and reconnaissance. After binding the slaughter system, he hunts fierce beasts, acquires slaughter points, continuously adds points to evolve, awakens the companion spirit artifact Death Demon Scythe, and masters dark combat skills such as Abyss Demon Pool, Shadow Claw, Eroding Dark Bat Assault, Instant Prison Shadow Kill Array, and Ten Thousand Troops. With a three-year pact with Luo Qingxue, he becomes famous in a single battle, tears up the marriage contract, and slaps the Luo family in the face. After entering the Kyoto Ability Academy, he sweeps through resource matches, skips grades to Tier 2, contracts the shadow sprite Tuantuan, achieves a golden skeleton, and his ability promotes to the SS-grade Everlasting Night Monarch, upon whose single thought the eternal night descends.