The show is centered on Johnny Rock (Denis Leary) who, as the magnificently talented lead singer of New York's legendary early 90's band The Heathens, was on his way to the cover of Rolling Stone magazine. His best friend Flash was being called the next number one lead guitar player on planet earth. The critics loved them. Their live shows were selling out. But Johnny had a problem with booze. And coke. And weed. And pills. And cough medicine. And oh yeah - he slept with Flash's wife. And his bass player's fiancee. The band broke up the same day their first and only record was released. 25 years later Johnny is trying to get the band back together.