Caught in a mysterious temporal and spatial rift, a boy arrived in a new world. Having lost all his memories of the past, he found himself bewildered by the world around him.
But his memories told him that this world wasn't unfamiliar, and still, he was stunned.
When Doraemon was no longer a raccoon, but a blue-haired beauty.
When Nobita Nobi was no longer an ordinary-looking boy, but a cute, somewhat scatterbrained little girl.
And there was the little girl Fuu with her strange hairstyle, the athletic girl Gian, the expressionless Dekisugi...
What would this world be like?
(The movie arcs will change some endings where the characters never meet again. I'll do my best to write the happiest ending I can.)