In the near future, Earth faces extinction due to massive tectonic upheaval, prompting the Space Development Center to urgently pursue human colonization of space. Amid this crisis, mechanical engineer Hitomi Adachi has developed the "Tech Bracelet," a device capable of drastically enhancing human physical abilities, making it a crucial technology for space migration. However, activating the bracelet causes intense pain, and she continues striving to improve it. One day, she receives news that her sister and an exploration team were ambushed and annihilated by Jaldas' henchmen on Saint Louis Planet—forces plotting to conquer the universe. Fueled by rage and a thirst for revenge, Hitomi defies orders and travels alone to Saint Louis Planet. Using the power of the Tech Bracelet, she defeats several soldiers, but proves no match for Jaldas himself. Seeking humanity's life energy, Jaldas attempts to extract Earth's coordinates and flight data from her. Yet Hitomi refuses to speak, enduring waves of excruciating pain mixed with overwhelming sensation, keeping her lips sealed. To break her will, Jaldas resorts to the vilest of methods—defiling her body to crush her mentally. Even as consciousness slips away, she refuses to give up. But a report from his soldiers drags her into an even more dire crisis...