Kagaku ninja tai Gatchaman

In G-Town, the G-1 has been altered in order to reduce its mach resistance and enter the atmosphere more smoothly. Ken boards the G-1 immediately and goes out on a test flight. But he enjoys the flight so much that he doesn't pay enough attention and is shot down when he accidentally gets near a secret Galactor base. Ken somehow manages to make a forced landing, but his bracelet is damaged and he can neither establish a connection nor transform. Furthermore, he is also hurt. Fortunately, a native boy, Peter, saves him. Peter and his older sister tend to Ken's wounds and hide him in an old barn. Ken attaches a transmitter to a carrier pigeon he finds there and lets it fly into the sky. Elsewhere, Peter and his older sister are captured by Galactor members and end up tied to a tree. Joe and the others have caught Ken's radio signal and come in a hurry. They save Peter and his sister just in time.