Bert Shambles is still recovering from the injuries he sustained in his first adventure when he is recognized at the local library by a lovely hippie named Scarlet. She hires Bert to help dispose of her deceased father's memorabilia and takes him to a music festival at a local park, where they witness the tragic electrocution of the lead singer, who is an old friend of Scarlet's.

Bert soon finds himself entangled in a plot to steal a rare guitar, accidentally drugged with a powerful psychedelic, and dumped by his girlfriend and soul mate, Aria--until a second rock musician is found dead, and the clues all point to him as the prime suspect.