In the Heartwood Forest, a tiny, adorable unicorn is born. But although everyone is incredibly sweet to it and constantly feeds it sugared clover, the little creature doesn't behave like a unicorn at all. It always says no, so its family soon starts calling it the NO-icorn.
One day, the NO-icorn breaks out of its cotton-candy world. It meets a raccoon who doesn't listen, a dog who doesn't care about anything, and a princess who always talks back. The four of them make a pretty good team. Because even being stubborn is much more fun together!