The game follows the titular Bunny Girl, a spunky heroine whose peaceful life is interrupted when a fleet of bizarre alien invaders descends upon her planet. These aren't your typical sci-fi gremlins; the enemy designs are surreal, colorful, and often hilarious, fitting the "Strange" moniker perfectly.

In a quiet suburban city, — a part-time arcade clerk and full-time eccentric — spends her weekends in a handmade bunny costume, much to the confusion of her neighbors. One night, while testing a broken satellite dish on her apartment rooftop, a blinding flash of turquoise light engulfs her. She wakes up in the cargo hold of an extraterrestrial vessel, still wearing her fluffy bunny ears and tail.

The -K... in the title likely refers to “Knight’s Edition,” a backer-exclusive variant that includes concept art and a developer commentary track.

"Greetings, Earthling," the alien said in a series of electronic beeps and boops, which Bunny Girl surprisingly found herself understanding. "I am Zorvath, from the planet Zorvan in a distant galaxy. We have been observing your species for some time, and we believe you possess a unique... let's call it 'spirit' that could be crucial to our mission."

The story kicks off when Ellie’s viewers request a live stream from an unknown planet. Upon arrival, an "unexpected turn of events" leaves her stranded, forcing her to navigate a hostile alien landscape. The ultimate goal is to collect enough to activate an escape vehicle and leave the planet. Gameplay Mechanics