In a futuristic dystopian society, human emotions have been eradicated to achieve peace and stability. Citizens live in a controlled environment where they function efficiently but without emotional connections, ensuring harmony and productivity. The protagonist, Silas, works as an illustrator within this society and begins to notice strange changes within himself. He finds that he is experiencing emotions, which are considered a disease known as "Switched-On Syndrome" (SOS). These feelings lead him to observe and become intrigued by his co-worker, Nia, who is secretly suffering from the same condition.

As Silas's emotions grow stronger, he and Nia form a secret connection, understanding they are both afflicted with SOS. They must navigate their newfound feelings while hiding their condition from authorities that aim to cure and eliminate emotional deviations. Through their bond, they experience forbidden intimacy and mutual support, scrambling to find a way to preserve their love in a society that demands its suppression. The tension between their concealed emotions and the oppressive system builds, setting the stage for dramatic choices and consequences as they grapple with the reality of their situation.