Sheila Rae is a mouse who boastfully claims she is not afraid of anything. She recklessly shows off in front of her friends and classmates acts of bravery such as tying Wendell with her skipping rope for snatching it. In addition, she teases her little sister, Louise, for being afraid of little things. But one day when Sheila Rae wanders down a strange route on her way home from school, Louise gets the better of her and for the first time, Sheila Rae feels afraid, while Louise gains courage and helps Sheila Rae overcome her fear.
