The heroine Lin Xi, a math genius who looks cold and lonely, is actually a "snail girl" who has closed herself off due to the trauma of her original family. She has a soft heart and longs for warmth. The male protagonist Lu Chen is recognized as the campus male god. Under his sunny appearance, he hides the precocity and calmness brought about by family responsibilities. He has the insight to understand the loneliness of the female protagonist at a glance. In the national-level "Xinghai" scientific research experimental class, two people were forced to form a study group because of a "lie" and sign a "mutual aid contract", starting a journey from "contract partners" to "soul mates".
