In the bustling halls of Mabuhay College, 20-year-old Lia Cruz has built a reputation as the go-to girl for cracking the mysteries of girl's ideal guys and partners. With a sharp mind, a knack for observation, and a small fee, Lia can uncover the identity of anyone's "mystery guy." Business is booming until an outrageous request came to her. Reluctantly accepting the job, Lia's search leads her straight to Ethan Reyes, the quiet, brooding boy who seems utterly uninterested in the chaos of love drama. But fate has other plans, and their paths start crossing in the most unexpected-and hilariously awkward-ways.
As Lia and Ethan are thrown together time and time again, they begin to uncover more than just fleeting glances and shared laughter. Beneath Ethan's stoic demeanor hides a past he's desperate to leave behind, while Lia's detective persona masks her own struggles with trust and vulnerability. Amid misadventures, misunderstandings, and late-night revelations, they find their guarded hearts fluttering in ways neither expected. But as their secrets unravel, will they learn to embrace the messy, unpredictable nature of love? Or will the walls they've built keep them apart?