Ptolemy Grey's memory is getting worse. After learning his grand-nephew is no longer there for him, Ptolemy's niece assigns him a new caretaker.

Ptolemy begins treatment to restore his memories, drifting in and out of fever dreams about his life as Robyn keeps vigil at his side.

Ptolemy must settle all scores and make peace with his past—before he loses his memories once and for all. Series finale.