In 2XXX, alien invaders suddenly arrived on Earth. The giant monster "Atomic Shuri," hailing from the Atomic Nebula, overwhelmed humanity with overwhelming power far beyond modern science. However, the princess of Atomic Shuri found conquering Earth through brute force too monotonous and boring. Instead, she proposed a special one-on-one challenge to the humans—a traditional duel based on Shuri customs, where Earth's representative would face off against her. The contest? A battle of "SEX," where both sides must bring each other to the greatest pleasure. With the fate of Earth at stake, the most lustful and virile human is chosen to represent the planet. Now, the night that will decide humanity's future begins. Can you endure this ultimate trial?