Consist of episode 1 to 47 end, anime TV series.
Five years have passed since Kamen Rider BLACK defeated the evil organization Gorgom. An alien race called the Crisis Empire invades Earth, captures Kotaro Minami and jettisons him towards the sun. To make sure Kotaro is dead, the Crisis shoot particle beams at him, splitting his King Stone in two. Due to the sun's intense radiation, the King Stone evolves his alter ego to Kamen Rider BLACK RX. In addition, he can also transform into two other forms: Roborider (Prince of Sadness) and Biorider (Prince of Anger). Using his new abilities, Kamen Rider BLACK RX wages a new war against the Crisis Empire.