Charlie is a happy little boy. He is an only child who plays happily for hours at a time either by himself or with his best friends: his dog, Logan, and Rogue the dragon, who lives in the backyard and is visible only to Charlie.

Then, one day, Charlie's parents bring home a basket holding a little bundle wrapped in a blue blanket. When the bundle begins to cry, his parents tell him that this is his new little brother, Sam, and that Charlie is a big brother now. But what does this mean? Charlie doesn't know, and he doesn't understand how or why his family is changing. Soon, though, he discovers what it takes to be a big brother, and he also builds important skills that will help him deal with an ever-changing world.

In this children's story, a young boy whose family gains a new member must learn what it means to be a big brother.