A documentary looking back on the making of Shunji Iwai's TV play Fireworks, Should We See it from the Side or the Bottom?.

11-year-old Yusuke and his classmates camp in the woods and see a strange light. They discover a small metallic object like a robot which talks, calls himself Tetra and knows Yusuke's name. Tetra can create wonderful gadgets but actually has to save the world with Yusuke's help from extraterrestrials with bad intentions.