Malaki ang utang na loob ni Zai sa magkakapatid Mendoza dahil sa pagtulong ng mga ito sa kanya. The Mendoza's shouldered the expenses for her brother's heart operation in exchange of her marrying the eldest named Zacharius. Pero may problema. Her soon-to-be-husband is immobilized. At dahil sa utang na loob, Zai committed herself to fulfill her duty as Zach's wife. Even Zach was cold and distant because of his situation. Pursigido siyang kunin ang loob ng lalaki. And she will be with him in his journey until he can walk again. But it seems like, hindi lang ang loob ng binata ang nakuha niya. Maging ang puso rin nito. When everything seems right for her and Zach, truths and lies came up next. And Zai's commitment will be tested. 1st Installment of Mendoza Legacy