Shea invites Wes to tag a wall with spray paint. This action is illegal but Wes feels safe doing it with Shea. This is because Shea is a drug runner in Wes' neighborhood. Therefore Wes feels that the situation is under control.
I cant believe that just happened! I could go to jail!
While Wes and Shea are tagging the walls, the police come. This frightens both of them and Wes starts to run away. Shea has trouble coming up with a plan so he starts shouting at the cops. The leads to an even bigger dispute
Your son is under arrest for assist in a homicide!
Since Shea is a drug runner, he needed something to protect himself, so he has a gun. He doesn't think the situation through and starts to shoot. As Wes is running away, he hears gunshots and police cars and ambulances pass him. He is worried that someone died.
Wes runs into the alley behind his house and starts crying. He is in deep regret of his actions. He knows that he could go to jail even though he wasn't the one who shot the officers. He sneaks inside to get some sleep.
Later on in the night, Police Officers come into Wes' house and start bombarding his mother with questions. Wes gets arrested for the assist in a crime. His Mom has no idea what is going on and Wes quickly learns that he should never be involved in crime ever again.