S1E46 · Gatchaman in the Valley of Death

Ken is maintaining his beloved plane at the airport when a man with a gun forces him to fly a plane. Since Ken's plane has only a single seat, the man makes him fly another plane made for two people. During the flight, Ken seizes an opportunity and tries to take away the man's gun. However, the man fires a bullet which hits a wire in the fin tails of the Cessna, making it impossible to control the plane. The man, using the only parachute on board, escapes, saying that he will go to sell information to the ISO. Ken makes a forced landing, but because of that shock the radio device in the bracelet ceases to function. Ken sees a Galactor Mecha and follows the man who heads towards a valley. There is an abandoned Galactor mine there. Ken and the man are captured and hung up in an old well. The man has betrayed Galactor for money and has hidden a tape in the well which contains an overheard discussion between Katse and the Prime Minister of a certain country. Ken transmutes and rescues the man, defeating all the Galactor members in the building. But in an explosion occuring at that time, the man, who has seen Ken's true face and has followed him, is badly hurt. The Galactor commander, who got out alive, is about to attack them with a mecha. The man entrusts the tape to Ken, along with a message to his mother living in Hontwall, then he throws himself and the Galactor commander towards the bottom of the valley. What remains is the tape, which was smashed by the commander, and one name. "Kelly, Arthur Kelly is my name".