Wonder Beat Scramble (ワンダービートS), also known as Micro Nauts, is a Japanese science fiction anime series planned and supervised by Osamu Tezuka in his later years, which ran from April 16 to November 19, 1986, on TBS-affiliated networks. Produced by Mushi Production, Tokyo Broadcasting System and Tokyu Agency, it was directed by Satoshi Dezaki and Seiji Arihara, with Arihara, Tsuneo Tominaga and Sunao Katabuchi serving as chief unit directors, Setsuko Shibuichi designing the characters, Yūichi Higuchi designing the mechanical elements and Ryō Yonemitsu and Hajime Mizoguchi composing the music. This is the first TV anime work of the newly established Mushi Production after its bankruptcy, and is an original project by Satoshi Itō based on the "Bacteria Rangers" of the 1963 Astro Boy TV series. The story was overseen by scholars in the fields of medicine and physiology, and at the end of each episode, Tezuka, himself being a Doctor of Medicine, appeared in live-action segments to explain the organs of the human body and physiological functions.
Plot
In the year 2119, the space life exploration ship Greensleeves encountered the wandering planet X23, and after discovering traces of the extinction of advanced civilization on other planets that X23 had passed through, the World Federation ordered Greensleeves to destroy X23, but its captain, Isao Sugita, refused and cut off all communication.
Two years later, Isao's eldest son, Susumu, who lives in Nagisa City, is suddenly taken to the Phoenix Tower of the Institute for Comprehensive Health Science, where Dr. Miya asks him to join the White Pegasus, a special medical unit.