I’m so confused

Can someone explain the entirety of of link click to me again because the bridon arc has me so confused 😭 I heard that this was supposed to be a prequel to the first season, but I don’t really understand the mechanics of Lu guang’s time jumping and where the hell he is or how it affected the story I don’t know. Maybe I just have to rewarch the first and second season again but some kind of context or explanation would be greatly appreciated 😭🙏