Watch Grandpas Know Best Full Movie Free Online 123Movies. When Ali's father hires a new secretary, she awakens desires in Ali that the shy 22-year-old never knew he had. But working for his father, his mother reminding him he's the right age to marry, and trying to be a good Muslim complicate things. Now he must choose between family duty and true love. Can you really make yourself and your family happy at the same time?