Adrien, a professor, becomes Chloe's unexpected stepbrother after her mother marries his father. Chloe attempts to manipulate Adrien to stop their parents' marriage, causing tension between them. Chloe schemes to discredit Adrien by spreading rumors. However, a misunderstanding arises when Chloe's water heater breaks, leading to a compromising situation that strains their relationship. As they navigate their newfound family dynamic, Chloe's feelings towards Adrien become more complex. Despite their initial conflicts, Chloe begins to develop romantic feelings for Adrien. The complicated relationship between step-siblings continues to evolve as they struggle to navigate their conflicting emotions and family dynamics. Ultimately, their growing feelings may further complicate their already strained relationship.