A shipwreck allows modern young man Lin Xuan to travel to the Ice and Fire Island in "Heaven and Dragon Sword" and witness the tragic scene where Xie Xun and Zhang Cuishan died unexpectedly. After awakening the "Wanjie Mall" system, he can exchange treasures from the martial arts world for modern items, but he cannot directly obtain martial arts. Faced with the grief-stricken Yin Susu and the high fever Zhang Wuji, Lin Xuan used antibiotics and modern medical techniques to win initial trust, and started an unexpected new life on this isolated desert island.
From solar panels to simple houses, from electric shock bats to luxury yachts, Lin Xuan uses modern technology to transform the original environment of Binghuo Island. Poems and songs under the aurora, life and death protection during volcanic eruptions, and six years of getting along day and night, Yin Susu was gradually moved by the gentleness and wisdom of this mysterious boy. When the time comes to return to the Central Plains, their relationship has transformed from the initial mutual wariness to unforgettable love.
However, the turmoil in the world is far more complicated than survival on a desert island. Discussing Tai Chi on Wudang Mountain, fighting Zhao Min in the metropolitan city, encountering Xiao Zhao on the secret path of Guangmingding... Lin Xuan uses modern wisdom to deal with various forces, but has to face a problem: how to balance the hard-won relationship with Yin Su and the growing affection of the other heroines? When Cheng Kun's conspiracy comes to light and the Yuan Dynasty's army presses the border, how will Lin Xuan, armed with modern weapons and ancient martial arts, rewrite the fate of the Yitian world?
