Annoyed when her mom brings her books about puberty, Reggie throws them into a volcano and unleashes a new nemesis: the Butt Witch.
While searching for a ghost, the friends fly through air vents and spy on the wonderfully weird residents of Endless.
Reggie rescues her toys from a garage sale and brings them to Endless Island, where they magically come to life when she buries them in the sand.
Esther, Todd and a reluctant Reggie investigate the island's many mysteries and find themselves trapped in an endless series of rooms.
Reggie, Esther and Todd plan to spend spring break on Endless, but Reggie's stuck in the hospital with a burst appendix.
When his big brother goes away to college, Todd creates a replacement: Guy Pleasant, a dashing, guitar-playing dog prince.
When explorer and treasure hunter Captain Elmer arrives on Endless, Todd and Esther suspect he isn't what he seems.
Reggie tries to figure out how to get back to Endless. But once her art teacher helps her find her creative spirit, her key starts working again
Todd's new crush asks him to the school dance, and Esther meets a cute guy there. But Reggie feels left out and wants to leave early.
Todd tries out for a new band called Cherry Cement, but they choose Esther instead. On Endless, the Butt Witch feeds on Todd's anger.
When Reggie hurts Brown Roger's feelings, the Butt Witch turns him into an angry monster and encourages him to get revenge.
Reggie babysits Kathy's nephew Ogden and takes him to Endless to have some fun. But shy Ogden gets scared and turns invisible.
After finding a box of her dad's stuff, Reggie accidentally releases a sad spirit and has to face her feelings about her father leaving.
To impress the Butt Witch, Big Deal transforms himself into a Reggie lookalike and stirs up mischief at the Endless Island carnival.
Reggie develops a crush on Conelly, a cool eighth-grade girl who makes her so nervous that she breaks her key to Endless.
Reggie's garden is a mess, so Esther hires a penguin personal assistant to help her clean and organize her things.
Esther, Todd and Reggie discover a grocery store on Endless where all the food brings back humiliating childhood memories.
After a style-savvy girl makes Reggie feel self-conscious about her clothes, she sets out to become the fanciest person on Endless.