Mary-san, who everyone knows from the urban legend “Mary-san’s Phone Call”, has been transported to another world due to a slight mistake! The only thing Mary-san can rely on is her calls with “me”, her target. The unreliable Mary-san will do her best in another world, acting according to “my”suitable advice! A chaotic comedy interweaving a protagonist with nerves as tough as super-alloy steel and a (physically) dangerous girl.