Keroro Gunsou Movie 4: Gekishin Dragon Warriors de Arimasu!
超劇場版ケロロ軍曹 撃侵ドラゴンウォリアーズであります！
Synopsis
Mysterious colossal entities known as the "Ryū no Shippo" (Dragon Tails) materialized all around the globe. Fearing the potential threat they posed, the Keroro Platoon launched a worldwide investigation into the Dragon Tails, but during the research, Tamama suddenly vanished. Forced to search for him, the entire platoon eventually arrived at Mont-Saint-Michel in France, where they encountered a mysterious girl named Sion, who possesses the enigmatic Ryū no Hon (Dragon Book). Unbeknownst to them, hidden truths about her and a global catastrophe that could annihilate the entire world as they know it are about to be unleashed.