After the death of their respective sisters, Piper and Billie (Kaley Cuoco) go their separate ways, both determined to get their families back together. Piper and Leo have an emotional reunion before she enlists Coop's (Victor Webster) help to travel back in time and change the events that led to the deaths of Phoebe and Paige. The episode will features scenes in the past, including one in 1982 with Grams and a very young Piper who needs to be cheered up. Piper and Leo will go to the future in order to fix the present. There, they will meet their 70-year-old selves who will provide them the needed guidance to fix everything. In addition to Leo (Brian Krause), we'll probably see future Wyatt (Wes Ramsey), future Chris (Drew Fuller) and Grams (Jennifer Rhodes), and James Read (Victor).