![](https://image.tmdb.org/t/p/w300/au5epktvpnFiFwmLXzyjwx203va.jpg)
Juvenile
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.