Teppei is going to visit his older brother Kotaro Takamiya during a scientific conference after training with a mysterious woman named Karen for the past 11 years. However his plans for a family reunion become stalled when a woman named Aramis kills everyone in the conference to kidnap Kotaro. Teppei on the way to save his brother encounters a broken mechanical horse called B't X who revives thanks to Teppei's blood and is now his aide to save his brother from the mysterious Machine Empire.

Five years ago, gravity-defying bubbles with mysterious powers rained down upon the earth. After a huge explosion of uncertain origin, Tokyo became ground zero, with the city being enclosed in a gigantic bubble. As a result of this Bubble Fall phenomenon, the metropolis that was once the capital of Japan drowned in a gravity-bending sea; the government declared it a prohibited zone, and the residents abandoned it. Children orphaned by the Bubble Fall now squat illegally in Tokyo, partaking in dangerous parkour team battles across the city's dilapidated buildings. Hibiki—a talented ace in these games with the ability to jump between bubbles—claims he can hear sounds from the Tokyo Tower. Determined to uncover its mysteries, he sets off toward the source, but he falls into the waters below. A strange girl, whom he later nicknames Uta, saves him. But little does Hibiki know that Uta's appearance in his life will reveal the secrets behind the disastrous event that changed their world forever.

The financial talent Wang Ke was accidentally brought to the Shenzhou Star by the ancestral sword. With the help of his family's blazing sun, he drove low and walked high, and worshiped the fairy gate. He thought he would make a fortune, but he didn't want to be involved in the two turbulent undercurrents of righteousness and evil. Relying on his talent and wit, Wang Ke made every step of the way, won the hearts of beauties, built a business empire, stepped on the road of defending the way and eliminating demons step by step, and eventually became the immortal king. (Source: Youku, Google translated)

The saga of the Knight Sabers continues as the group tries to find out who or what is behind the recent string of robberies, murders, and Boomer malfunctions which are somehow related to the creation of an advanced artificial intelligence. Furthermore, it seems that the Knight Sabers may be breaking up. (Source: ANN)