Mac reunites with the grown-up version of her brother Dylan and is stunned to learn how her family turned out. Tiff, KJ, and the Erins meet a stranger who might be the ticket back to 1988.

Larry may have a way for the girls get home to 1988…but it’s going to require a lot of adult Erin…and Mac may not want to go home to her old life after spending time with Dylan.