剧情:

小新和媽媽一起逛百貨公司，他纏著媽媽買了假面英雄最新出品的玩具寶劍。回家之後，發生了怪事，寶劍竟然變成了普通的竹棒。從幼稚園回家的路上，小新遇到了一隻和小白長得一模一樣的狗狗，唯一的不同在於它是黑色的。小新給它取名為小黑，把它帶回了家，並成功地說服了爸爸媽媽，讓小黑留在了家裏。正當野原一家過著平靜的日子的時候，通向黑暗世界庫萊頓的大門被打開了，陰謀統治地球的邪惡計畫正在秘密推進。

一天，一位自稱名叫“普莉林”、身材勁爆的大姐來找小新，說他是被選中的勇者，必須對抗來自黑暗之門的邪惡力量。從那天開始，野原家倒楣連連，爸爸失去晉升機會，媽媽在大減價爭鬥中落敗。黑暗的力量在不知不覺中侵襲了進來。夜裏，小新爬起來上廁所，少年麻達突然出現在他面前。麻達是被派來保護勇者小新的。在他的幫助下尚未覺醒的小新打敗了一個又一個敵人。然而更強大的敵人出現了，小新能拯救世界麼？！

Synopsis:

Shin-chan succeeded in making his mom to buy a latest Action Kamen toy sword for him. After they went home, something bizarre happened: his sword turned out as an ordinary bamboo stick. On the way back from kindergarten, Shin-chan saw a black dog which totally looks the same like Shiro. He named it Kuro and persuaded his parents to keep it at home. One day, a beautiful girl Puririn, came to Shin-chan telling him that she needs his help to return video to video shop. He opened the video shop door and that was the door to the dark world! While Shin-chan was about to go toilet in the midnight, a youth named Mata appeared before him. Mata is sent to protect Shin-chan; he helped Shin-chan to defeat all kinds of enemies. Nonetheless, stronger enemies are approaching, how is Shin Chan going to save the world?