In the episode titled Catching A Big Fish With A Small Hook, Ranger Bill finds himself in a race against time as he is called upon to locate Dr. Jonathan Black, a brilliant scientist crucial to the nation's defense efforts. Dr. Orlando, who is gravely ill, insists that Black is the only one capable of stepping into his shoes. However, Black has been missing for 18 months following a tragic accident that claimed the life of his lab assistant, leaving everyone uncertain about his fate.