College student Ye Feng, in order to raise money for his grandmother's surgery, is forced to get involved in an Amazon extreme survival challenge called "Lonely Brave". This is a cruel elimination game with 100 participants where no one has ever survived. Starting right in a desperate situation, Ye Feng faces lethal beasts such as piranhas, black caimans, and jaguars, and even has to guard against malicious plotting from his peers. In the desperate situation, he allies with strongman Fu Changxiong and teenager Qi Xiaojie, builds sturdy tree houses and composite bows, hunts beasts, and counter-kills wanted criminals. The rainforest is fraught with dangers, and the show production team hides manipulations. Ye Feng can only grip his weapon tightly, in the law-of-the-jungle forest, to protect his worries, embarking on a lonely brave journey of survival.