the perfect opportunity to retrieve the capsule. He also promises Shin-chan a party if he succeeds in his mission. Lemon and Shin-chan wear a disguise and infiltrate the facility. After several roadblocks, Lemon tells Shin-chan that his and the doctor's body is extremely similar, and that only he can enter the doctor's laboratory since the doctor set his body as a key to enter. Shin-chan passes through a hallway filled with lasers, he then finally arrives at the doctor's lab and is ultimately greeted by the "evil" doctor who introduces himself as Dr. Hegaderu. He explains to Shin-chan that he once intended to create a food item that would decrease the amount of gas released by humans (in order to prevent global warming). He wanted to name that food item "Megahegaderu" but accidentally created a food item that greatly increases the amount of gas released by humans and named it "Megahegaderu 2". Since then, he had been debating on whether to keep it for research purposes or destroy it. This was the "capsule" Shin-chan was told to retrieve and the doctor further explains that all that has been told to him is a lie. Despite this explanation, Shin-chan steals Megahegaderu 2, insisting on not believing in the doctor's words. Shin-chan meets up with Lemon as the two escape. In the truck, Lemon tells Shin-chan that he can finally meet Action Mask. The next morning, Lemon, Shin-chan, Lime and Plum (Lemon's father) head towards the secret organization (Herebu located in Herebu kingdom) Lime and Plum work for. The organization is led by twin sisters Narao and Yosuru who are delighted at the sight of Megahegaderu 2. Shin-chan is then introduced to the Action Mask he talked to in the video which turns out to be a fake version. Narao and Yosuru reveal that Action Mask's involvement was just to trick Shin-chan into stealing the Megahegaderu 2. Everything that Dr. Hegaderu said was true. The only reason they needed him was due to his unique physical resembelence to Dr. Hegaderu, making him a "Spare Key" to enter Dr. Hegaderu's laboratory. Shin-chan is then taken away along with the rest of his family into a special chamber where they are fed the Megahegaderu 2. It causes them to release a huge amount of gas that gets stored in large tanks. Narao and Yosuru reveal their intention of filling the entire world with stench,