Hannah, a young woman who is both phobic and hypochondriac, lives alone in her mansion and spends her days relentlessly hunting down dust with her army of cleaning cloths. Her maid, Louise, faithfully assists her in this never-ending obsession. Everything must be clean... Clean... Clean... Driven by an unceasing quest for cleanliness, the young heroine is constantly searching for the ultimate miracle product. When she receives a promising new disinfectant, she eagerly tests it on herself without hesitation. But the experiment unexpectedly transports her into an extraordinary world.