30 years have passed and the good ship Galactica is nearing the end of its search for Earth, which is home to their ancestor brothers. But the spectre of danger from their long-time enemies, the Cylons, causes the decision to bring Earth into their own century of development.

Capt. Troy and Lieut. Dillon are running out of time to stop Xaviar from bringing advanced rocket technology to the Nazis in 1944 Germany.