Thunder 3

Three ordinary schoolboys stumble upon a mysterious DVD rumored to unlock a gateway to a parallel universe. However, when they momentarily turn their attention away, Pyontaro’s younger sister, Futaba, slips through the portal. She is swiftly captured by hostile extraterrestrial beings that have completely overrun this alternate version of Earth, leaving the boys horrified and determined to act. Realizing they must save her, the trio ventures into the unknown dimension themselves. Upon arrival, they make an astonishing discovery: their cartoonish physiques grant them extraordinary, superhuman abilities within this hyper-realistic world. Armed with these unexpected powers, the three friends embark on a daring rescue mission, navigating a dangerous alien-occupied landscape to bring Futaba home safely.