Groizer X

An alien species known as the Gaira resides secretly in the Arctic and intends to take over Earth. Dr. Yan, who is captured and coerced into their service, develops a powerful transformable aircraft named Gloizer X. The robot is given to Dr. Yan's daughter, Rita, who manages to flee from the Gaira and reaches Japan. There, she encounters Jo Kaisaka after sustaining injuries. Jo assumes control of Gloizer X and joins forces with Rita to combat the Gaira's efforts to invade.