The first 26 episodes aired from October 1, 1981, to March 25, 1982, followed by a second season called Superbook II: In Search for Ruffles and Return to the 20th Century (パソコントラベル探偵団, Pasokon Toraberu Tanteidan, lit.

Personal Computer Travel Detective Team) with 26 episodes from April 4 to September 26, 1983.

Superbook (Anime Oyako Gekijo), begins at the home of a young boy named Christopher "Chris" Peeper, who discovers the ancient Bible named Superbook that can speak and send him, his friend Joy and his clockwork toy figure named Gizmo the Crusader Robot back in time during the events of the Old and New Testaments.

The second series, Superbook II: In Search for Ruffles and Return to the 20th Century (Pasokon Travel Tanteidan), takes place two years after the first series, where Superbook falls onto a computer, giving anybody the ability to see into the past from Christopher's home via the monitor.

While Chris and Joy keep watch and control of the computer from the present, Gizmo and Uri experience the stories from the Old Testament solely.