In this effervescent companion to the picture book Stella Keeps the Sun Up, Stella goes on the hunt to figure out who's behind her friend's missing tooth. Stella, her bestie Roger, and her second-best friend Owen are excited to go see Sue the T-rex at the museum, but when Owen has to leave early because he lost a tooth, Stella becomes determined to find it for him. How did he manage to lose a tooth? Was it stolen? Could the tooth fairy be responsible? Could Owen be...a dinosaur boy? Nothing will keep Stella from her investigation, even if she and Roger fear their own teeth could be stolen too. But the more Stella investigates, the more she realizes that perhaps this case is not as complicated as she thought.

In this incandescently fun, hijinks-filled picture book, a young girl schemes to keep the sun up in the sky so she never has to go to bed. If Stella had her way, she would stop sleeping on her sixth birthday. Because sleep is boring. And there are so many better things you could be doing. And Stella is tired of being tired. So she comes up with a plan. People only have to go to bed when it gets dark, and it only gets dark because the sun goes down. If she can keep the sun in the sky, she and her best friend, Roger, can stay up for a hundred years! They enact their magnificent, wonderful, genius plan, offering the sun a cup of coffee, shining a light at it so it will shine back, and jumping on a trampoline to reach the sun and push it higher. But before long, Stella begins to wonder...are there downsides to keeping the sun up forever?