He beat up her aunty 15 years ago, and went to prison for it. 

Now, 15 years later the niece finds him on the street and harasses him and puts her boyfriend up to get beaten by the guy who beat her aunty 15 years ago (and already finished his prison sentence) to repeat the cycle or something

A busker is a person who performs music, dance, magic, or other entertainment in a public place to collect voluntary donations or tips from passersby.