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?