Watch My Father's Other Family for Free: How to Stream the Movie Online at 123Movies. . Shelby is devastated after her father's death. Curious about her family connections, she decides to look up the DNA-based family tree, and is surprised to find out that her father had another daughter. She goes on a mission to find her sibling and meets Rose, her half-sister. But as the initial euphoria dies down and the question of who gets her father's inheritance crops up, things begin to change.