Ye Chen awakens in a parallel universe where citizens aged eighteen and above gain access to Monster Chat, a mystical network enabling pet summoning. Most individuals receive merely ten summon attempts and a single bonding opportunity—but Ye Chen's fortune diverges dramatically when the Unlimited Summoning System activates within him. One triumphant notification after another floods his consciousness: Dark Princess (level 8), Alchemist (level 7), Female Asura (level 7), Goddess (level 9), Demon Fox (level 10), Nyuwa (level 10)—an unstoppable cascade of legendary companions answers his call. In a world where humans, monsters, and pets interweave their destinies, Ye Chen emerges not as an ordinary participant, but as an unprecedented force. His path through this coexistent realm begins where others' possibilities end.