After rebirth, Mu Yunyao never did three things: be kind to others, leave a chance for evil, and believe in true feelings. She was sinister and reckless, who would rather turn the world upside down than stoop to compromise. However, there was always a cold-faced prince tailing her secretly, who wanted to marry and adore her.

Lin Beichen, an otaku, got a mobile phone by coincidence, and the mobile phone took him into a world called Dongdong Zhenzhou. Here, he became the first son of Lin Jinnan, one of the top ten famous men in the North Sea Empire [Zhantianhou]. He was also a notorious black sheep, and was born with brain disease. When Hou Lin was defeated in the south during the war, his family was in decline, and Lin Beichen, who lost his backer, was stuck in school by various' enemies' and couldn't go out. In a critical moment, he was surprised to find that the mobile phone he brought with him turned out to be a plug-in artifact that could help him practise. Relying on this artifact, Lin Beichen opened his own way of hilarious counterattack.

Deep in a tropical jungle, young Yaiba Kurogane diligently practices swordsmanship alongside his father, Kenjuurou, completely unaware of the modern world. However, one day, the two end up in a container on its way to Japan. There, they encounter Kenjuurou's old rival, Raizou Mine, and his daughter, Sayaka. Out of other options, Yaiba agrees to a deal with the Mine household: if he beats the strongest student in their dojo, he will be welcome to stay. Using his distinctive skills and extraordinary strength, Yaiba earns his place. Wanting to fight more powerful enemies, Yaiba follows Sayaka to school—where he quickly loses to Takeshi Onimaru and acknowledges him as his new rival. With Onimaru inheriting the sword of his bloodline and obtaining demonic powers, Yaiba must train to become even stronger and beat him for good.