Tim Diamond is the worst detective in the world. He couldn't find his nose with both hands and a road map. Luckily, his younger brother, 13-year-old Nick, is the real brains behind the operation! It's Christmastime, and once again Tim and Nick are flat broke. Luckily for them, a famous Greek pop singer and movie star, Minerva, has been getting death threats, and they're the detectives hired to solve the mystery.Unfortunately for Nick, Tim's busy fending off Minerva's amorous advances, and the international star has made plenty of enemies on her way to the top, all of whom seem to want her dead. Can Nick track down the would-be assassin on his own?