Turning forty, for research tech Lannie Marvin, is rough. She discovers her husband is leaving her. Then a crazed lab mouse brutally bites her. So Lannie snaps. She heads out to chase an old dream—a music career—and a new crush: the drummer of a heavy metal band. Drummer Tristan Allard holds a benefit every year in memory of his late wife. He’s beginning to doubt his ability to write the band’s music without his wife’s inspiration – she was also his muse. Plus, he’s damn lonely. So when Lannie literally plows into him at the backstage reception, Tristan is ready to learn more about her – and her long-buried interest in musical composition. The two head off for a wild ride of a weekend, but reality catches up. Tristan is headed back to the UK to audition his next album. And Lannie learns that an elevated libido isn’t the only side-effect of that experimental drug. To her horror, she discovers the treated mice have gone deaf.