In "The Boss Baby: Family Business," the story follows the Templeton brothers, Tim and Ted, who have grown up and drifted apart. Tim is now a family man, while Ted is a successful CEO. They reunite when a new villain threatens the world of babies, prompting them to team up once again. To combat this threat, they take a special formula that transforms them back into their baby selves. As Boss Baby and his brother, they embark on a mission to save the day, rediscovering the importance of family and teamwork along the way.