"The Last Days of Ptolemy Grey" is an American drama series that tells the story of an elderly man named Ptolemy Grey, who is 91 years old. He has long been forgotten by his relatives and friends, and the old man himself remembers very little. On the brink of sinking into lonely senility, Ptolemy suddenly experiences a powerful seismic shift. He is given a unique opportunity to temporarily restore his memories. He decides to seize this chance to uncover the death of his nephew.