After returning from Victorian England, McCall loses his time bands and cannot contact Uncle Shelby. Life goes back to normal for a while. Then he finds that Dracula has survived and seeks revenge. After the bands return, McCall accidentally sets them off just as the vampire breaks into his home to attack his family. He rockets into the past, unable to protect them. If he can return, what can he do? Once he lands in the middle of the sinking of the Spanish Armada, his time band is broken and he becomes unhooked in time. The Time Police take him hostage but that doesn't last. He is hurled into the past where dinosaurs have evolved into highly intelligent beings. The future battle spills over into the past and forces McCall, his new friend Ber-Dath and the other dinosaurs to battle across time to keep evil forces from seizing control of existence. We encounter UFOs, Little Big Horn, Hiram Scott, the Fairy Mounds, Howard Hughes and his Spruce Goose, young Clarence Darrow and the Underground Railroad