With Sharona out of town visiting her ailing mother, Monk has been left in the care of his annoying former neighbor, Kevin Dorfman. As Monk is forced to deal with Kevin's antics, there's a knock on the door. To his astonishment, it's Dwight Ellison, the father of his late wife, Trudy. Ellison is an executive overseeing a popular game show called "Treasure Chest." He's convinced the current champion is cheating, so he asks Monk to come to Los Angeles to help him figure out what's going on. Monk and Dwight head to L.A., with Kevin in tow.