After risking his life to save a cat, office worker Lin Mo dies in a car accident, only to stumble into Meow Star and meet a cat god with fur like the night sky. Grateful for his kindness, the cat god grants him a new life and the ability to transform, letting him freely switch into any cat breed. The mark of Meow Star remains on the inside of his left ear.
Back in Linhai, Lin Mo opens the Meow Shadow Detective Agency in an old alley. To the public, it's an ordinary agency that finds lost pets and investigates family matters. In truth, he uses his cat forms to sneak into hidden corners and solve bizarre cases by listening to animals whisper: the "ghost cat" haunting the old alley is a sick ragdoll begging for help; the campus exam thief is a black cat taking revenge for its abuse; and behind the stench in an apartment lies a secret laboratory contaminating pet food.
As he solves cases, Lin Mo discovers that his death was no accident. It was connected to "Shadowclaw," a pet food tycoon. Shadowclaw is the Host of a dark creature, capturing stray cats to extract their fear and hoping to open a rift to Meow Star and seize the cat god's power. Lin Mo teams up with A Ju, an orange cat who can share memories, and meets other companions, including a one-eyed cat and a healing cat. From rescuing children from an ancient town's illusion to fighting Shadowclaw's four-element device, Lin Mo comes to understand what the cat god meant by "true power": the kindness that connects people and animals. When Shadowclaw begins the ultimate rift-opening ritual, Lin Mo rallies the people he has helped and an army of stray cats, transforms into a giant cat wreathed in starlight, drives away the darkness, and ends the crisis. Afterward, the agency takes on heartwarming cases, helping cats find homes and resolving conflicts between cats and people. One rainy night, Lin Mo catches sight of a figure that looks just like the cat he once rescued. The bond between Meow Star and Earth lives on.
Hehe, not bad.