Four girls wake up 6000 years in the future with a toy phone and no instructions. The world has already ended. They have to figure out why they were sent here before they understand what "here" even is. Time travel sci-fi usually makes you feel like you're solving a puzzle alongside the characters, but this OVA makes you feel like you're lost with them, which is the only honest way to experience it. A single episode can't explain everything, so it doesn't try. Instead it sits in the silence of four teenagers standing on dead earth, holding the last piece of their old world, and asks what comes next.
Four schoolgirls materialize on an alien wasteland six thousand years in the future, refugees from a world trapped in temporal stasis. Back home, the same day repeats endlessly, and humanity faces extinction. Their only lifeline is a useless cellphone that will never ring in this dead world. The girls move across barren ground beneath strange skies, searching for answers that might not exist. Around them, the landscape shifts between the beautiful and the wrong: unfamiliar birds wheel overhead, rivers run colors they shouldn't. They carry almost nothing except the weight of being chosen for this impossible task without ever being asked. Then one girl recognizes something. A name on a gate. A structure that shouldn't be here. What unfolds is science fiction filtered through isolation and wonder, where the stakes are planetary but the story remains intimate. The narrative questions what survival actually means when the world you saved no longer exists. For viewers drawn to quiet, cerebral sci-fi that values atmosphere and dread over spectacle, this single episode delivers an unsettling meditation on sacrifice and displacement.