The time went back to 20 years ago, 4 years prior to Wei Wuxian's death where we meet his easygoing and goofy teenager self, his tsundere brother Jiang Cheng and his kind sister Jiang Yanli. Every once in a while, the Gusu Lan Sect open their doors for a certain period for foreign disciples to attend their classes and this year, the three siblings were finally old enough to attend it as part of the Yunmeng Jiang Sect. However, everything did not go well as they planned when they met Jin Zixuan, the young master of the Lanling Jin Sect and the fiance of Jiang Yanli. Not only did they book the whole Inn, giving them no place to rest during their travel, but it also caused them to lose their invitation, making them unable to enter the Cloud Recesses. After rejected by the unreasonable Lan Wangji, the second young master of the Lan Sect. Wei Wuxian had no choice but go back to the Inn by himself to find their invitation, so his siblings wouldn't need to spend the night outside. What he didn't expect was to not meet his siblings, but the very same second young master of Lan upon returning...