This is a story about youth, friendship, and love...
A mysterious invitation from the island's royal family makes three close friends suspicious of each other... For the sake of fairness, they decide to seek help from detectives. By accident, he hired a "half-vinegar detective" who had only read a few mystery comics - Lin Duoji.
After entering the island kingdom's royal family, strange things began to happen - one of the three employers disappeared and his whereabouts are unknown. Aji, who was passionate but not familiar with reasoning, insisted that it was not an accident. And he did a lot of things to prove his conjecture.
If it is not an accident, who is the mastermind behind the noble and shrewd queen, the autistic and gloomy prince, the witty and talkative earl, or the spy in the employer?
Aji, who had a headache, really wanted to strangle himself to death - he really shouldn't have accepted this commission just for "fun"...