Foss, a twenty six year old gym owner, runs into financial difficulty alongside six of his closest friends. Seemingly at the right time, Deano who is considered the criminal of the group gets a tip off about an abandoned house from a mysterious woman outside his home. Tired of the deprivation they have endured in different ways from a young age, the seven men pull together and plan to burgle the abandoned house previously owned by a retired entrepreneur. With high hopes of finding valuables of worth to ease their burdens, Foss an the other view the robbery as a minor step towards an easier lifestyle if they found anything of significance.

When the time came for the robbery to commence Foss and the group are stunned to find money and drugs in the old and rusted building. Filled with annoyance that he may have bit off more than he could chew Foss lets paranoia consume him before being able to relax and enjoy having money to spend. Little did he know that their sinful actions would trigger a sinister chain of events that, beyond their control, would change their lives forever.

Based on the 7 Deadly Sins, Underclass 7 is a mystery-thriller that explores the concept that ones most indulged sin can lead to an eventful downfall.