A six-year-old (The Pain) and his eight-year-old sister (The Great One) see each other as troublemakers and the best-loved in the family.

When Echo, who is tired of sharing everything with her sister Crystal, finds an artifact from the human world, she and Crystal fight over ownership and are forced by their mother to get along.

Once upon a time, there were seven princess sisters who did everything together, from horseback riding to jumping in royal leaf piles to throwing legendary piñata parties. But one day, they had the biggest fight in the entire history of princess fighting. There was no worse sound than the sound of this fight. Will the sisters ever find a way to fill their kingdom with sounds of laughter and playing again? Princesses of all sizes will royally delight...

Attending the royal debut party, their one chance to impress the Prince and live up to their cruel and bitter mother's expectations, sisters Drizella and Anastasia get a taste of freedom, pitting them against a mother whose greatest power lies in manipulation.

Raised to kill dragons along with her sister, Dani Rivera unexpectedly forges a rare and magical bond with one who makes her question everything she thought she knew about dragons, which pits her against her sister.

Simon and his older sister try out for the bubble ball team together, but they end up on opposing sides.

It's summer vacation for Phineas and Ferb, and they have a lot to do! First, they fix up their mom's car and enter the Swamp-Oil 500 at the speedway. Then, they build a wild roller coaster.

Feeling lonely when her family returns to school and work at the end of the summer, pirate Dalmatian Poppy turns mutinous in the face of a kitten that has been adopted to keep her company.

Seventh grader Abby St. Clair is eager to start another season with her elite riding team at Saddlehill Academy boarding school, competing against her new stepsister--until she starts getting anonymous messages threatening to expose the secret she is desperate to hide.

"Abby used to be close to her older sister Natalie, but now they seem to have nothing in common. And their constant bickering is putting a strain on the family's winter vacation. After a day on the slopes, their frustrated parents leave the girls alone in their cabin together. But when two suspicious men appear at the remote cabin where they're staying, Natalie is in serious danger. It's up to Abby to use her quick thinking to fend off the intruders....