A little girl has a wonderful idea. With the help of her canine assistant, she is going to make the most magnificent thing! She knows just how it will look. She knows just how it will work. But making the most magnificent thing turns out to be harder than she thinks.

Told in rhyming text, a little girl is having a day where absolutely nothing goes right, a day filled with frustration and annoyances, but even bad days end eventually.

A little girl has a wonderful idea. With the help of her canine assistant, she is going to make the most magnificent thing! She knows just how it will look. She knows just how it will work. But making the most magnificent thing turns out to be harder than she thinks Un día, una niña amanece con una magnífica idea en su cabeza. Con la ayuda de su perro y asistente decide dedicarse a construirla. Sabe cómo será. Sabe cómo funcionará. Y piensa...