The project focuses on four girls who belong to the lowest group of a star training high school and their success story to the top after encountering rap battle performances.
In 2079 the birth of the brainwave instrument BrainStation triggered the fourth industrial revolution. Mankind has ushered in a brand new era-the “virtual cyber age”. Through the use of a BrainStation, people can connect to an all encompassing cyber world. This virtual world is constructed like a neural network and the entire system is controlled and dispatched by the master brain Watson. However, over time issues are starting to surface: many people can't distinguish between virtual and reality, leading to psychosis and long-term addiction to the virtual world.
Rewind to Wai Tak-shun’s childhood days and Tak-shun is devastated due to his father Wai King-yan’s death. He then has mood swings and loses interest in everything. He even completely forgets about his father. For Tak-shun’s sake, his mother Tse Mei-sheung and uncle Tse Tim-sing never mention King-yan’s death.
One day, Yuka Sekiguchi who is working at a real estate company, had to take over her grandmother's house and was asked to check for a hidden closet. Due to curiosity, she looked for it and found the hidden closet where she suddenly slips back in time to Edo clueless. She then meets Ukai Denzaburo, a policeman at Minamichi Police Station, who got her involved in an investigation of a murder and asked for her advice during the investigation due to his poor reasoning skills.
Fujita Kazuyuki is an otaku who turns out to be the one carrying the Millennium Saber within. That means that he's actually Arest Horn, a legendary hero. Amore Gore, an evil organization of demons, seek the Millennium Saber in order to rule the world. Three girls, Arisu, Airi, and Akira, magically appear in Kazuyuki's life. When they transform they become the Three Musketeers of Arest Horn, and it's their duty to protect Kazuyuki until Arest Horn awakens.
Liu Xiangxiang, trapped in a dream, is tasked with assassinating Prince Mu Chunshen in the Kingdom of Chu, with four chances before facing death by poison. Disguising herself in various roles within the prince's mansion, her attempts are repeatedly thwarted by unforeseen events. As she gets closer to Mu Chunshen, she discovers his kindness and falls in love, while uncovering the hidden truth behind her assassination mission.