This is a fantasy story that takes place in a modern city. The protagonist Helian Wentian is a highly talented Five Elements Master who accidentally discovers that he is the eldest son of the devil. At the same time, the sky is acting in different ways, and evil spirits are doing evil everywhere. Soon, the second son of the devil will be born into the world. However, the second son is evil by nature and will definitely cause natural and man-made disasters after coming to this world. After learning about this, Wen Tian took his girlfriend Mu Shuanying, who was also a Five Elements Master, and people with powers such as Li Xingba and Han Yisuo to try their best to prevent the birth of the devil. The devil world also deployed heavy troops to defend it to the death. Can they reach the devil's cave safely, and can they prevent the birth of the devil?