Set at Tafa Wittayalai School, the series follows the emotional journeys and intertwined paths of high school boys experiencing different kinds of love for the first time. As a group of close friends navigates the unpredictable highs and lows of youth, they are forced to solve the ultimate "compulsory curriculum" that has no fixed formula—love itself. Through secret crushes, unexpected chemistry, and tests of friendship, each couple must find their own unique solution to the equations of their hearts.