A man who lost his memory finds himself tied to the murder of a woman and a larger conspiracy. He discovers he has many names, one of which is the nickname Fifth Corner. A beautiful redhead named Erica is on his trail. Everyone wants his mysterious diary (a laptop with details of all his assignments). His evil boss Grandwell wants him back working for The Corporation, which disappoints Fifth Corner's rival The Hat who wants him dead.

Fifth Corner (aka “George”) search for his wife Eva is interrupted when he is arrested as Jack Previn for the murder of a Japanese electronic genius. He is about to be extradited to Japan when the blonde who works for The Hat arrives and post bail. The new name is Jack Previn and the mystery is the death of a Japanese inventor and his missing amazing electronic gadget. The arc story of Fifth Corner's search for his identity and Erica's obsession about bringing down Grandwell continue as the series primary focus.

While Fifth Corner continues to search for his identity Grandwell has erased all evidence of Erica's existence. Fifth Corner may have found his family and his name, John Avlean. The mob is moving in on John's big brother's restaurant. When the Fifth Corner and Boone take on the mob, things go wrong. This week's name is John Avlean and the mystery deals with the mob's attempt to take over John's big brother's restaurant.

Grandwell wants the painting he had Anthony Parachini (Fifth Corner) steal for him. Fifth Corner can’t remember where the painting is, but finds yet another identity, Jean Michel, that leads him to it. To complicate things, a hit squad arrives to kill Grandwell, and Anthony and get the painting. To save Erica and get her life back, Fifth Corner makes a deal with Grandwell. Two new names are featured, Anthony who worked for Grandwell and Jean who led a secret life from Grandwell. The mystery is where is the painting.

Fifth Corner had agreed never see Erica again if Grandwell restores her identity. When Erica learns of the deal, she rejects it, even if it means she will be killed. Grandwell remains in his forgiving mood in regard to Fifth Corner, but The Hat finally convinces Grandwell to let him kill Fifth Corner. Grandwell expects and hopes The Hat will fail. The last episode spares us a new name or mystery as we rush towards the resolution of Grandwell and Fifth Corner arc story. The series ends with many of the questions unanswered including the real name of Fifth Corner.