Tinik sa Dibdib unveils the plight of Lorna who works to support her family. Her father Tiburcio is a drunkard and a womanizer, while her mother Candida is sick and weak-willed. To avoid her problems at home, Lorna leaves and becomes a stay-in helper in a beauty parlor. It is there that she meets Lando, a security guard who falls in love with her. Lorna believes that her marriage will be the key to the happiness and freedom she's been longing for. Little does she know that her marriage with Lando will only be the beginning of the most excruciating days of her life. She discovers, while living with Lando, that life with his family is more agonizing than living with her own family. From the day she first sets foot in Lando's house, she falls in bad terms with his stepmother Trixie, while Trixie's sister Moret keeps trying to get her to leave them.