The true story of the 1973 tennis match between World number one Billie Jean King and ex-champ and serial hustler Bobby Riggs.

After a disease kills 98% of America's children, the surviving 2% develop superpowers and are placed in internment camps. A 16-year-old girl escapes her camp and joins a group of other teens on the run from the government.

The series is set during Bruce Wayne's early years as the Batman, following his initial period of battling organized crime. Over the course of the season, he hones his skills with the assistance of his butler, Alfred Pennyworth. Bruce is introduced to Alfred's goddaughter, Tatsu Yamashiro. Tatsu is a martial arts swordsmaster hired to act as Bruce's bodyguard, but also recruited to act as a superhero partner to Batman.