The Batman and Robin board a cruise ship at sea, the Vardonic, in order to track down an accomplish of a gang operating in Gotham City. The list of suspects includes four "Batmen"!; When loot from a crime mysteriously disappears, a series of letters arrive to the Caped Crusaders, and Robin succeeds in tracking down the letter writer: Batman himself!; While impersonating Batman to impress his son, ex-con Ed Wilson is shot and gravely wounded. To protect Tommy, his son, and his father's image, Batman impersonates Wilson and eventually saves the boy from the Garver gang.