On one side, the dragon snake in the lake, Red Dragon, experienced a thunder tribulation and transformed into a dragon. He broke into a place to help his friends, but he met Xingjun, who had no "good intentions" towards him.
On the other side, the Emperor of Heaven's Jade Seal sucked spiritual energy and secretly descended to earth. The Emperor of Heaven ordered Xing Jun to capture it, but Xing Jun violated his duties and fell in love with the Jade Seal.
Emmmmm This opening chapter tells the story of Xing Jun pretending to die to protect Yuxi, and letting that stupid dragon find Yuxi and protect him.