Narda receives superhuman powers and becomes Darna. Darna and her child brother Ding start by fighting the Hawk Woman; next they face-off with the Giant, and both foes are destroyed. They meet Dr. Vontesberg a good Samaritan woman doctor, who actually plans in secret to destroy an entire village to avenge her grandfather who had been mistakenly accused of being a devil worshiper. She too has powers to summon the dead and terrorize the townspeople. Narda is captured by the evil doctor, who shows Darna how she intends to achieve her plan. Just in time, Ding arrives to rescue his helpless sister and together they stop Vontesberg's plan. Darna and Ding flow their way to the city, but they are captured by a Sorceress, and they join a bunch of other prisoners. The sorceress Lei Ming and Darna measure their strength and powers. After losing her face, Lei Ming takes her own life.

Crippled girl Narda finds her boyfriend paralyzed by a mysterious beam shot from a UFO. Together with her powers and brother Ding, she transforms into Darna and fights against alien women who are trying to make the Earth a colony of their own planet.

The Filipino superheroine and her little brother Ding must defend their village from alien-controlled giants.

Fly, Darna, Fly! is a 1973 Filipino action-adventure film based on the popular comic book character Darna. The story revolves around a young woman who transforms into a powerful superheroine with the ability to fly and the strength of a snake. She uses her powers to protect the innocent and battle against various villains, including a reptilian humanoid and a gorgon. The movie combines elements of fantasy, family, and superhero genres, delivering an exciting and thrilling experience.