Well, I better get in character

Before Bart had traveled back into the past, he had spent his months preparing the time machine, and getting ready from the mission. Finally when he completed his mission, most of his mission anyways, Bart moved in with his great grandparents. He attended school, and lived like a normal teenage boys until on day when he was on his way home….

They were standing on the back porch, staring at a machine that now sat in their back yard. It was a very familiar machine to Bart, there were a few changes and improvements but… It was HIS time machine. The one he used to come to the past months ago. The doors opened and Callie stepped out, getting the cricks out of her neck. 

Hearing the hum of the time machine, Bart's green eyes widen and he zoomed into onto the porch. "What are you doing with my time machine?!" Bart looked at Jay and Joan, demanding an answer. That was his time machine. It was made for a mission, not to be played with by some random girl he barely knew.