A fatherless stoner on a fast-track to nowhere discovers the family he never knew is closer than he thinks after he takes a job in a mafia-backed 80s nightclub.

...as above. Intrigued by main action in ?80?s themed mafia backed nightclub?.

Agreed with DPG.

I suggest you read the 'Formula' tab on the top bar. There are several key components a logline needs which are missing in this post.

Okay. ?That's a setup for a plot. But what is the plot that results? ?What becomes his objective goal as a result of the discovery?
Who or what opposes him?
What's at stake? ?(What does he gain by succeeding, lose by failing?)

And: what do you conceive to be the story hook?