As the business mogul, named Alex, reconnects with his old flame, Sarah, he is shocked to learn that they have a son named James who is now a teenager. Sarah explains that she kept James a secret all these years because she didn't want to disrupt Alex's successful career.
Feeling guilty for not being there for his son, Alex decides to spend more time with James and tries to make up for lost time. However, James is not easily swayed and resents his father for being absent for so long.
As Alex tries to bond with James, he also struggles to balance his hectic work schedule and the demands of his high-profile career. Sarah, who still has feelings for Alex, tries to help mediate the strained relationship between father and son.
Over time, Alex and James slowly start to develop a bond as they navigate the challenges of their newfound relationship. As they spend more time together, Alex begins to realize the importance of family and the sacrifices he must make to be a present and loving father.
In the end, Alex learns valuable lessons about love, forgiveness, and the importance of being there for his son. Longing is a heartwarming tale of redemption, second chances, and the power of familial bonds.