A scrappy band of neighborhood kids transforms their friendship into an unlikely detective agency, tackling crimes across Tokyo that baffle even seasoned officers. Each member brings something vital to the table: quick thinking, physical prowess, mechanical ingenuity, and a wheelman who can navigate the city's streets. What starts as youthful curiosity about petty mysteries quickly escalates into cases that put them at odds with real criminals and, more frustratingly for everyone, with the local police force who'd rather these kids stay out of their jurisdiction. The real tension isn't just solving whodunits, it's proving that age doesn't determine competence. These young detectives operate on instinct and improvisation where adults rely on procedure and protocol, which means they often crack cases the official investigation misses entirely. Success breeds confidence, which breeds trouble. Each investigation deepens their commitment to their amateur operation while testing whether kids this young should actually be diving into genuinely dangerous situations. The show balances adventure and comedy as they navigate both mystery-solving and the everyday complications of being young while playing cop.