Kitty is excited to throw a kitty-corn party but becomes frustrated when newcomer Puppy messes up the decorations, ruins the gift Kitty made, and worst of all, he takes up all of Unicorn's attention.

Milo loves spending time with his best friend Jay, but when new girl Suzi moves in next door, Milo starts to feel left out, and as his jealousy grows more intense a green-eyed monster pops up beside him, twisting up all of Milo's thoughts and making him feel sad.

Lindsay struggles with jealousy and self-esteem issues when satisfaction with her work at her parents' restaurant is challenged by a glamorous and exciting class newcomer whose family has just opened a rival bakery.

When she doesn't get the lead in the class play, Posey does something mean and needs a lot of help from her tutu to admit what she did.

"When Posey's first grade class gets a new student, she worries her friends will like the new girl more than her."--

Feeling despair over her romantic prospects after disappointing dates, Hildy becomes infatuated with a boy who has an irresistible smile during a summer that proves to be more complicated than expected when he turns cloyingly possessive.

Natalie navigates responsibility and jealousy when she overcommits the Mini Cupcake Club leaving her twin sister Stephanie to save the day.

Shelly is hosting new student Leeza, a grrrmaid, at her house, but becomes jealous when Leeza seems more interested in being friends with Coral and Angel.

When Emma goes for a modeling gig, Katie tags along for support, but when the agency chooses to go with Katie instead, Emma finds herself jealous.

When his robotic cousin, Java, joins his soccer team, Logan is replaced as team MVP since Java is a great scorer who doesn't pass the ball, but when the robot gets wet, Logan and his teammates must come together to score the winning goal.