In the bustling city of Manila, Maria Iyaah Anastacia Soriano, a convenience store worker, finds herself caught in a whirlwind of failure and betrayal. When her best friend invites her to a club to forget her cheating boyfriend, Mia's life takes an unexpected turn. Intoxicated and vulnerable, she succumbs to the charms of a mysterious CEO, Gunther Dewayne Vandeuce, in a steamy one night stand. Little does she know that her actions will lead her to a shocking discovery - the woman who caused her breakup is her own half-sister, Wency Soriano, who has tormented her for years. As Mia and Gunther's connection deepens, they face the challenges of Mia's complicated past, trauma and the relentless pursuit of Wency. In the vibrant streets of Manila, their love story unfolds, defying societal expectations and proving that true love knows no bounds. Will Mia find the strength to overcome her past and embrace a future filled with passion and redemption? But what if everything is not a coincidence but the result of an Obsession?