Isaac is back in Beacon Hills just in time for graduation, and just in time to make Scott sexually frustrated. With the Ghost Riders looming, Scott and Isaac are put into a situation where Isaac is taken, leaving a heartbroken and disremembered Scott searching for a person he's not even sure exists. "I'm going to remember you!" Isaac gave him one last, trademark grin. "No, no you're not."

"I need you to be my fake boyfriend," Liam repeated. Or, the one where Scott shouldn't have talked to Liam like he was fragile, Liam should have thought twice before engaging in a childish kind of revenge and Theo shouldn't have accepted to help.

During the summer when Allison needs a break from Scott, him and Isaac grow closer. Isaac starts to have a crush on Scott, but he knows that Scott is still hung up over Allison. What Isaac doesn't know, is that Scott has feelings for Isaac, but he still is in love with Allison. Will Isaac and Scott end up together? Or will Scott find his way back to Allison, or both?

Isaac comes to Scott after being kicked out by Derek