Full House is a classic South Korean romantic comedy that follows the story of Han Ji-eun, an aspiring scriptwriter who lives in a house called 'Full House' built by her late father. Her life takes a drastic turn when her two best friends trick her into a vacation, sell her house behind her back, and leave her stranded. Upon returning, she discovers that the house has been purchased by the famous actor Lee Young-jae. To reclaim her home, Ji-eun enters into a contract marriage with Young-jae, agreeing to work as his housekeeper for a set period. As they navigate the complexities of living together under a fake marriage, the two polar opposites—the bubbly, optimistic Ji-eun and the cold, perfectionist Young-jae—begin to develop genuine feelings for one another. Their relationship is further complicated by the interference of their respective childhood friends, leading to a journey of self-discovery, heartbreak, and eventual love.