Tubig at Langis is a love story centered on the modern Filipino family. Irene is a middle-class single mother once broken by love. But Natoy, Irene's childhood friend who harbors a long-standing love for her, returns to her life and proves himself worthy of her love and trust. Together, they unfurl the epic story of a great love, braving all odds. They stand together through temptation, betrayal, heartbreak, and the inescapable presence in their lives of the mother of Natoy's child, Clara.