Senbei Norimaki loves Midori Yamabuki, but he cannot confess it to her. One day, they find a videotape of Senbei’s father. It is about how to make a love potion. If one takes it, he or she comes to love Senbei. It says that a booger from Senbei and the tears of Ogre-King Gyaska is required for making the love potion. Senbei invents a vehicle named Super Mecha "Ping-Pong", Senbei, Arale Norimaki and Gatchan go forward to Wonder Island where Ogre-King Gyaska is said to dwell. Senbei is such a unreliable man as to mistake dryer to a laser gun. But with powerful Arale and Gatchan with him, there won’t be anything to be afraid of. Well, will his wish come true!?
Arale, Senbei, Gatchan, Akane, Taro and Peasuke go on a space adventure to save Midori from Dr. Mashirito after tricking her into coming back to her home planet to marry him.
Senbei Norimaki finds the secret treasure named “Eye of Rainbow” of the legendary Nanaba Castle in the mountain. This treasure makes every dream come true. When the gang of Arale Norimaki and Gatchan tried to steal the treasure, Bisna, who is the descendant of Nanaba Kingdom, takes the treasure. Bisna wants to revive the devil and Nanaba Kingdom. Arale and her friends went towards the secret Nanaba Castle to get back the treasure.
