It's about the cooper family, Alexander (Ed Oxenbould), Anthony (Dylan Minnette), Emily (Kerris Dorsey), Kelly (Jennifer Garner) and Ben (Steve Carell). After Alexander suffers a bad day, he makes a wish that his family could suffer the same fate for one day and the wish, magically, comes true. Soon after, everyone experiences "something bad" and Alexander is stuck to try and fix the whole mess.