In the year 2095, as humanity continues to push the boundaries of space exploration, the vast and seemingly infinite universe offers an unparalleled sense of excitement and wonder. Harry and Milo are among the young, fearless space travelers who have taken on the vast expanse of space, with a mission to the moon from Kennedy Space Centre, Florida. However, their journey takes a devastating, fateful turn when their spaceship suddenly malfunctions, leaving them stranded on an unknown planet with no way of getting back home.

Desperate to find a way back to Earth, Harry and Milo set out on a dangerous mission to search for signs of life. As they explore this mysterious planet, they come across a cyborg translator named Yoki who helps them navigate a world that is both unfamiliar and perilous. Their search leads them to an entire high-tech city called Botilanic City, where they encounter a variety of beings including aliens, automatons, and cyborgs. Due to Yoki's position, they find themselves categorized into the cyborg group and must pass a series of grueling tests in order to earn the right to remain on the planet.

One of the mandatory tests is to learn the native language, Botilish, which proves to be a formidable challenge. As they struggle to pass the language exams, they are also required to obtain a job to fix their severely damaged spaceship. After Harry and Milo both find work, with Harry becoming a space drone driver and Milo working in a factory, they begin a new life in Botilanic City.

However, disaster strikes when the factory breaks down that results in Milo getting severely injured. Harry is forced to juggle caring for his brother and finding a way to get them both off the planet. In the midst of this crisis, Harry encounters a dangerous robovillian named Roqimont, who claims to have the possession of a special gem that can fix their space shuttle.

Determined to acquire the gem, Harry faces a variety of menacing, gruesome obstacles and must navigate a maze of treacherous situations. Roqimont stops at nothing to thwart Harry's efforts, creating all kinds of disastrous and outrageous predicaments. Thus, making it nearly impossible for them to escape.

After being trapped and tortured by Roqimont, Harry and Milo eventually escape and report him to the federal police. The criminal's capture brings them a sense of justice and closure, but they know they must still face the unknown as they continue to search for a way back home.

With the help of Yoki, they ultimately are able to fly back to Earth, reuniting with their family and loved ones. Their incredible journey earns them the Nobel prize award for discovering a new planet, cementing their place in history as intrepid explorers who never gave up on their dreams in the paradoxical universe.