Summer Break has begun for Kiyo but he has to fulfill promises he made to people; the promise to help perfect an invisible pitch, catch 500 fish, hunt for a dinosaur, and helping create contact with aliens. With Zatch's help, he is able to fulfil the promises quickly. The next day, Kiyo goes with his class on a camping trip and Zatch secretly follows him. After cooking curry with his friends, the camp ends in an explosion of fireworks. The next day, Suzy wins a trip to Hong Kong and Kiyo and Zatch are on plane on their way to England. Zatch's friend is seen stowed away on the plane heading to England.
Durante la pausa estiva Kiyo deve mantenere tutte le promesse che ha fatto ai suoi amici: giocare a baseball, pescare 500 pesci, cercare un dinosauro e entrare in contatto con gli alieni.
Las vacaciones de verano ha comenzado a Kiyo, pero tiene que cumplir con las promesas que hizo a la gente; la promesa de ayudar a perfeccionar un terreno de juego invisible, atrapar 500 peces, la caza de un dinosaurio, y ayudando a crear el contacto con extraterrestres.
いよいよ夏休み。このところ忙しかった清麿は、クラスの友人達と遊ぶ約束をしていたのを思い出す。しかし明後日は林間学校。その次の日からは父のいるイギリスに行くことになっている。イギリスではロブノスの言っていた「ガッシュに似た奴」の事やガッシュの記憶について調べなければならない…。
