Mr Papa Zola has announced that there will be occupied Mathematics exam student after the break. And BoBoiBoy also get to know about the best student battle between Ying & Yaya. Adu Du to know about it through the Probe was posing as a student and entering 5th grade honest. Although BoBoiBoy and others have criticized Adu Du and began to teach him, Mr Papa Zola prohibit them from doing so and Adu Du was accepted as a new student in the class. When the examination is underway Mathematics, Adu Du destabilize the situation by using the weather machine. Suddenly, Adu Du surprised to find the weather becomes cloudy, whereas he never ordered it. Apparently, the spacecraft Ejo Jo had arrived and landed on the roof of the school BoBoiBoy.