A midwestern professor tells a half-drunken story of time travel and the real cause of the dinosaur extinction.

The title suggests that Professor Amos Shute’s intrepid travelers are going back in time to four planets that are identical in every way to our own, but then again, perhaps those four planets were merely at earlier times to begin with. We won’t say one way or another, but we are glad that the Spanish Flu pandemic, World War I, World War II, and World War III were all averted on some Earth.

Zarrko, a mad time-machine-building scientist from 2262, believes that our nuclear weapons will enable him to take over the world of his time. He comes back to 1962 to steal one, and the Mighty Thor pursues him back to 2262.

The plot suffers from Alpha Centauri syndrome, where the time traveler might as well be from Alpha Centauri as from the future, but seeing the emergence of Kirby’s high-perspective artwork gives this issue a boost. In addition, the story provides a powerful image of the pre-Vietnam cold war era and its prevailing assumptions about the roles of women in society.

The Enterprise and her crew make their first intentional trip back in time to study historical aspects of 1968 and the Cold War, but unexpectedly, they intercept a transporter beam that brings the mysterious Gary Seven and his feline from a faraway advanced planet.

Sam pops into newly married Tom McBride (a New York policeman), who is headed to Niagara Falls with his new bride (a budding lawyer and the daughter of a senator). The two of them engage in the usual honeymoon activities—fighting off ex-boyfriend thugs, rolling underneath moving trains, studying for the bar exam—while unbeknownst to Sam, Al is at a Senate committee meeting in Washington, D.C., fighting for the life of Project Quantum Leap. Oh, yes, and it’s now official: Sam and Al believe that God has taken control of the project, although Al refuses to be pinned down as to which god she is.

White Spy thinks he can win a drag race against Black Spy and his DeLorean, all in just thirty seconds of stop-motion animation!

Five’s plan for the Umbrella siblings to escape the apocalypse by going into the past ends up scattering them throughout different years of Dallas in the 1960s. They manage okay on their own until shortly after 11/22/63, when secondary effects from changes to the timeline cause a nuclear holocaust that can be averted only by recently arrived Five jumping back to 11/15/63 to exert his unique charm into getting the gang to work together.