Lock and Key (novel)
After her drug and alcohol addicted mother abandons her, child services forces 17-year-old Ruby Cooper to move in with her sister, Cora, who had left for college when Ruby was young. Ruby is upset about this arrangement and continues to wear the key to her old home on a chain around her neck. After learning she will be transferring to a new high school, Ruby attempts to run away but is found out. Nate Cross, Jamie and Cora's next-door neighbor, covers for her. Over the span of the story, Ruby slowly becomes closer to Nate.
Rainbow Ruby
At Ruby's house, a small event related to the main plot of each episode occurs, before a red jewellery on the chest of Choco, Ruby's Teddy bear, flashes with a melody. Ruby then takes Choco to her room, and the two 'transport' themselves to the Rainbow Village. There, Ruby hears an explanation from Ling Ling, the mayor of Rainbow Village, and transforms herself using her Rainbow Roller into an appropriate clothing to solve problems. Each episode concludes, back home, with another small event.
The series is distributed as 52 single episodes and as 26 "double feature" episodes. The airings on Family Jr. in Canada are shown in the form of the latter.