Wen Yang, a former campus star from the real world, transmigrates into the novel Unforgettable Love five months before the main plot begins. Tasked by a malfunctioning system to play the role of the supporting villainess, she endures a harsh existence in a remote mountain village, performing daily labor such as farming and feeding livestock while waiting for the story's original female lead to arrive. Her only goal is to complete her assigned tasks without altering the main storyline so she can return to her original life. When the female lead, Xiao Yan, and her stepbrother, Xu Yi, arrive at the rural school as part of a volunteer program, Wen Yang is forced to host them in her dilapidated home due to a lack of dormitory space. Xu Yi, a rebellious teenager sent to the countryside to reform his attitude, clashes immediately with Wen Yang, whose indifference and sharp tongue frustrate his arrogance. Despite their rocky start, a tentative truce forms when Xu Yi provides snacks and Wen Yang prepares meals, leading to a reluctant coexistence. The dynamic shifts further when a rival transmigration system inserts a new character, Lin Minjing, into the story. Lin Minjing, an agent of chaos, attempts to sabotage the romance between the male lead, Qi Chen, and Xiao Yan by positioning herself as a rival. Wen Yang, recognizing the threat to her mission, subtly manipulates the housing arrangements to separate the protagonists and protect the original plot, inadvertently acting as an unlikely ally to the very couple she is supposed to torment. As the school year progresses, Wen Yang navigates the complexities of village life, dealing with local parasites and the growing influence of the story inserter, all while maintaining her cold exterior to Xu Yi, who begins to see past her rough surface to the capable and resilient person beneath.
