In this Japanese animated classic, homeless child Ricky is hit by a car and then finds himself meeting the famous traveler Professor Gulliver, who he has just seen a movie about. Joined by Gulliver's assistant, Sylvester the crow, a talking toy soldier and a dog, Ricky journeys to the Planet of Blue Hope, which has been overtaken by a group of servant robots that has turned on its creators. In order to free the planet, Ricky and Gulliver must battle the robots by melting them with water guns.