In a world of rigid expectations and pre-defined paths, The Derivative of Us follows the story of Haizel Medrante, a Grade 12 STEM student and only child trapped under the shadow of her parents' medical legacy. While her parents, Drs. Pierre and Leziah Medrante, have already drafted her future in white coats and hospital halls, Haizel finds her heart wandering into the world of structures and equations. Everything changes when she meets Morti, a brilliant but brooding 4th-year Civil Engineering student who survives on caffeine and pure grit. What begins as a series of grumpy tutoring sessions in the "Engineering Dungeon" evolves into a deep, soul-searching connection in the quiet corners of midnight coffee shops. Amidst the chaos of board exams, research capstones, and the heavy silence of the Medrante household, Morti becomes the one constant in Haizel’s world of shifting variables. As they navigate the "kilig" moments of first love—from secret sketches and shared umbrellas to the quiet comfort of being understood—they must decide if they are brave enough to build a future of their own design or if the pressure of their different worlds will cause their foundation to crumble.