10-year-old Phoebe Howell and her magical unicorn best friend, Marigold, enjoy a series of fantastical adventures. Phoebe goes back in time to meet her father as a kid and makes some surprising discoveries. Marigold reveals that she sometimes puts the world on mute, a power that Phoebe quickly learns is easy to overuse. And at the Unicorn Award Ceremony, the pair launch a campaign to get Marigold the highest honor. It's all part of the unique bond within one of the most memorable friendships in recent comics history.