Having cultivated in the deep mountains for twenty years, Zhang Jiahui has always been warned by his master Lu Xuan, "You are too weak, you will be beaten to death if you go down the mountain!" It is not until he is ordered to go down the mountain to deliver a letter that he realizes this world seems a bit wrong. With a casual block, he sends martial arts experts flying; with a gentle palm strike, he sweeps across major sects! Clearly possessing heaven-defying strength, he always firmly believes that he just has good luck. With the appearance of Su Qingyue, the eldest miss of the Su family, various forces enter the stage one after another, and the shocking secret his master has hidden for many years gradually surfaces. When the peerless powerful enemy descends, this young man who considers himself the weakest unexpectedly becomes an invincible existence that makes the entire martial arts world tremble!