A man wakes up on an alien warship to discover the princess leading the invasion of Earth has decided he's her husband, no negotiation required. The entire runtime is one sustained collision between "this is absurd" and "wait, are they actually a couple now." It plays the sci-fi invasion setup completely straight while treating the romance like a comedy bit that somehow works.
A photojournalist named Tetsuya witnesses something impossible during an alien invasion of Earth: a warrior woman carving through military forces with brutal efficiency. When their paths collide, he blacks out, only to wake up aboard an orbiting starship far above the planet he knows. His mysterious captor reveals herself as Kahm, princess of the invading force, and she has made a peculiar decision about his future. She wants him as her husband. What follows is a collision of cultures played for laughs, where Tetsuya finds himself caught between two worlds literally at war. Kahm's forward approach to romance clashes with his earthling sensibilities, while the broader conflict between humanity and these extraterrestrial invaders becomes backdrop to something far more personal and absurd. The comedy comes from watching a man negotiate an intergalactic wedding while his planet burns, and from Kahm's complete lack of understanding about how humans court. This is pulp science fiction that doesn't take itself seriously, mixing action, humor, and romance across a single, high-velocity narrative.