Deep in the jungles of Africa, a young researcher named Greg O'Hara becomes the guardian of a giant gorilla with a heart of gold. This gorilla, raised by a brave woman named Jill Young, has lived in harmony with her since he was a baby. However, their tranquility is threatened when an ambitious organization decides to capture the incredible creature to showcase it in an entertainment spectacle.
Greg and Jill, who have developed a special bond with this magnificent gorilla, decide to join forces to protect him from mercenaries who see him only as a profit increase, disregarding his feelings and freedom. As they embark on a race against time, they uncover not only the dangers of hunting but also the importance of friendship and the protection of wildlife. Along their journey, they face thrilling moments of action and touching instances of deep connection between humans and animals.
With spectacular scenes that showcase the strength and vulnerability of Mighty Joe, the gorilla becomes a representation of the struggle for conservation, while his story reveals the kindness and loyalty that can arise even in the most challenging circumstances. The film serves as a call for empathy towards nature and respect for its inhabitants, reminding us that sometimes, the greatest heroes come in the form of unexpected creatures.