This young girl dreams of being a top athlete. But whatever she does, she messes up. Millie squeezes too much toothpaste, uses too much glue, spills milk all over, and spells 'banana' wrong. When she repeatedly makes errors in the race, she feels frustrated and discouraged. She even ends up in a tree! 

Will she quit? Will she ever become an amazing athlete she aspires to be? See how Millie finally succeeds through learning, creative problem-solving, mental toughness, and determination!