Having recently become mortal, Leo is having trouble finding his place in the world. Feeling useless following a demon attack, Leo goes out for a walk with the boys. While he's out, the surviving demons attack again, trapping the Charmed Ones and taking them to the Underworld. When he returns and discovers what has happened, Leo tries contacting the Elders and other members of the magical community, but owning to his fall from grace, they ignore his calls. With no other options and no magic of his own, Leo goes to the only help he can think of...the future versions of his sons, Wyatt and Chris. Together, Leo and his adult sons go in search of the Charmed Ones...but can they find them and restore the natural balance before it's too late?