When Jake loses his brand new toy airplane, Katie Woo lies and says that she does not know where it is.

Nina creates a problem for herself when she tells her friends that she will be a star in the upcoming ballet performance and they misunderstand her.

When the new postman lies about the dogs of Doggeroo, Jack Russell decides to investigate.

Fourteen-year-old Kevin is very good at lying and doing so makes life easier, but when he finds himself in big trouble with his friends, family, and teachers, he must find a way to end his lies forever.

When goth teen Marlo wakes up in Fibble, the part of Heck that is reserved for liars, she is disgusted to find that she is in her younger brother Milton's body.

After Lucy finds her mother's old summer bucket list, she makes a list of her own and is helped out by new friends Mira and Jack, but Lucy is reticent to tell her new friends the truth about her past and continues to pester her mother over the one thing she never accomplished in her youth.

In 1974 at her new San Francisco school, nine-year-old Julie does not want to tell her class about her parents' divorce, or to tell her sister about messing up her school assignment, but when she breaks her finger playing basketball and her whole family rallies around her, she realizes the importance of telling the truth.

When Sophie confesses to a prank on her teacher Ms. Moffly, she begins to tell the truth so often that the other children in her class start calling her Sophie the Chatterbox.

When a young rabbit breaks a table lamp and blames the Tooth Fairy, her family explains the importance of honesty.