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.

Kicked out by Niecie, Robyn moves in with Ptolemy and accompanies him to a doctor's appointment for an experimental treatment.

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

After unearthing a long-forgotten treasure, Ptolemy makes a plan. Later, he meets with a friend of Reggie's and learns revelatory details.

Ptolemy looks to his longtime friend and lawyer to help protect Robyn. A family gathering in Reggie's honor brings both healing and confrontation.

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