The series is based of a 1985 Philippine film Hindi Nahahati ang Langit, and adaptation of Nerissa Cabral's earlier komiks version of the same title.

[1] Ariston (Edu Manzano) and Agnes (Dina Bonnevie) marry, and their children Noel (Piolo Pascual) and Melanie (Claudine Barretto) become step-siblings after the marriage.

Noel is driven to continue his studies in Australia; he meets Cynthia (Jodi Sta.

When Agnes dies of a heart attack, Cynthia withholds the news from Noel, thereby creating a rift between him and Melanie.

Melanie graduates with honors; a misunderstanding during her graduation party results in her impulsive decision to marry Ronald (Bobby Andrews), the son of wealthy and powerful Arnold Santillian (Lloyd Samartino).

Ronald abuses the pregnant Melanie who later on miscarries, and Cynthia's insecurities tax Noel's good nature.

They find refuge in their friendship; Ronald and Cynthia have an affair, and their encounter is caught on camera and becomes a sex tape.

Moody (Candy Pangilinan) discovers the video and tells Melanie, who decides to keep it secret.

Noel and Melanie file for divorce and annulment from their respective spouses, and Cynthia tries to burn down Ronald's house in revenge.