In a radiation-ravaged post-apocalyptic wasteland, Lei Xiao, leader of the Desolate Bone Beach, brings Su Nian, a surviving female doctor from the Ark Base, back to his camp to treat the wounded. Using her medical expertise, Su Nian establishes sanitary regulations and leads a team deep into the dangerous ruins of the Ark to retrieve seeds and supplies. She then guides the camp in farming to ensure their survival. When the Black Serpent Tribe launches a massive attack to seize their resources, Su Nian puts herself in danger and devises a clever plan, exposing the truth about her ex-boyfriend Zhou Ang's betrayal of the Ark. Together, they defeat the evil forces. Su Nian and Lei Xiao entrust their hearts to each other and rebuild a home for the survivors amid the ruins.