In 1777 Philadelphia, young Maddy Rose spies for General Washington's army by using an unusual code to communicate with her soldier brother.

Ethan tries to help his toddler sister find her own bedtime monster.

A boy has a hard time playing with his friend because his baby sister is hanging around yelling, "No," about everything they try to do.

Peter wants to run away from home when his baby sister arrives, but soon learns something very important about growing up.

"A metal boy named Tin is looking after his little sister Nickel one afternoon when she grabs hold of a balloon and floats away. Tin and his dog Zinc set off in hot pursuit as she floats towards the big city. Can they rescue Nickel before she goes too far?"--

Baby Lincoln has had enough of her older sister, Eugenia, telling her what to do and sets out on her own on a journey of self-discovery.

Revisits the sometimes challenging relationship between a six-year-old (The Pain) and his eight-year-old sister (The Great One) through seven chapters featuring such events as learning to ride a bicycle, having a birthday party, and dog-sitting.

After her brother tells her she is too little to play with him, Lulu, dressed as Ladybug Girl, makes her own fun.

Seven-year-olds Bradley, Brian, Nate, and Lucy make observations and gather clues that convince them that their older siblings, cousin, and animals have been captured by hungry space aliens.

Goldie the big sister lists all the things that she can do that Nicholas her baby brother cannot.