You awaken with amnesia in a motel room, your identity fractured by surfacing memories that are both human and alien. Your quest to uncover the truth places you at the center of a clandestine war between an alien race and Earth, forcing you to confront the possibility of your own alien heritage. The narrative framework is that of a choose-your-own-adventure, where your decisions dictate the outcome of not only your fate but that of all humanity.

The premise of 'Once Human' sets up a classic science fiction conflict with a personal mystery at its core. The interactive format, promising multiple endings based on player choice, suggests a focus on player agency and exploration of different narrative outcomes. The inclusion of alien abduction and Men in Black elements points towards a narrative that blends conspiracy thriller tropes with extraterrestrial themes. The core tension appears to revolve around the protagonist's struggle with their identity and their role in a larger interstellar conflict.