Eric Thrashmettle is a retired rock'n'roll legend - or dinosaur, depending on your perspective. His kids - Lulubelle Flower Fairy Thrashmettle (Lou) and Living Buddha Thrashmettle (Buddy) - are mortally embarrassed by his every move. But Eric is broke, his wife Wave is spending a fortune at a distant luxury yoga retreat, his manager Per has disappeared - and the kids want their credit cards back. Lou and Buddy must abandon all pride and self-respect and get their terminally embarrassing dad back on the road so he can sing his epic - and lucrative - hit Pig Train once again.