Iron Man 4: The Legacy Lives On follows the aftermath of the events in Endgame, where Tony Stark's death left a void in the lives of his loved ones. Pepper Potts, Harley Keener, and James Rhodes are forced to move on without Tony, but they soon realize that his legacy can still be carried on. With the help of Morgan Stark and Peter Parker, they work to develop new technology and fight new threats, all while honoring Tony's memory. The story is filled with action, emotion, and humor, and pays tribute to the beloved character of Iron Man while paving the way for new heroes to emerge.