Mortimer Angel, still a private eye in training, answers a strange, ominous invitation and ends up on the run with a gorgeous girl, Ella Kassel. Chased by unknown killers and wanted by the FBI, Mort and Ella must thread an investigative needle to determine who the real enemy is while they try to discover who murdered the deputy director of the FBI. In disguise and off the grid, Mort ends up in the deadliest situation of his career.