Lt. Rosenthal joins the 100th just as one of its crews reaches a milestone. The U-boat pens at Bremen become a target for the second time.

Rosie's next mission signals a significant shift in the 100th's bombing strategy. Crosby receives a promotion, but it comes with a high price.

Rosie and his crew are sent to rest at a country estate. Crosby meets an intriguing British officer at Oxford. Egan faces the essence of Nazi evil.

The prisoners of Stalag Luft III attempt to connect with the outside world. Berlin becomes the 100th's primary target. Rosie makes a crucial decision.