Lin Xia is reborn with the memory of being pushed into the mouth of a giant lizard by her best friend in her past life. Faced with Su Yao's hypocritical cozying up repeating her old tricks and one assassination bounty after another, she consistently remains calm in her layout, taking defense as offense. Whenever the enemy thinks victory is in her grasp, she pulls out high-tier equipment and fatal traps synthesized by the system, turning the opponent from arrogant encirclement to being completely wiped out as cannon fodder. From individual defense to turning opponents against each other, from tunnel counterattacks to blowing up the mercenaries' ammunition depot, every wave of offensive is reversely crushed by her, and finally, she watches with her own eyes in the giant lizard pack as Su Yao gets what she deserves.