Two babies are switched at birth. When the mistake is discovered 12 years later, it leads to complications in the lives of both families. One family is affluent, with dutiful and (apparently) contented children. The other family is poor, with rambunctious (even delinquent) children, often hungry, but with lots of laughter in the house.

Two identical twin sisters, separated at birth by their parents' divorce, are reunited years later at a summer camp, where they scheme to bring their parents back together. The girls, one of whom has been living with their mother and the other with their father, switch places after camp and go to work on their plan, the first objective being to scare off a gold-digger pursuing their father.

Identical twins are separated at birth, one becoming a streetwise mechanic, and the other an acclaimed classical concert conductor. Finally meeting in adulthood, they're mistaken for the other and entangled in each other's worlds.

Father and his family comes to visit onkel Anders' twin brother, Sofus, who comes all the way from Australia with a cow in tow. Unfortunately, Sofus equally surly and grumpy, as Anders is good and kind. Sofus takes his cow with Herefords to win milking competition. But when the cow refuses to give milk may Lille Per, Mie, Ole and Seas learn Sofus that words are leading the way to be good to others.

Julius and Vincent Benedict are the results of an experiment that would allow for the perfect child. Julius was planned and grows to athletic proportions. Vincent is an accident and is somewhat smaller in stature. Vincent is placed in an orphanage while Julius is taken to a south seas island and raised by philosophers. Vincent becomes the ultimate low life and is about to be killed by loan sharks.

A timid butcher and his drama queen twin sister quit the hostile confines of post-Brexit Britain and venture to Australia in search of their birth mother, but the seemingly tolerant townsfolk are hiding a dark, meaty secret.

Two brothers who can feel each others' pain and pleasure mess up the French revolution.

Satin and Chenille are officially over 24/7 togetherness. But once the most fashion-forward members of the Snack Pack see there’s some mischief only twins can cause, they might have a change of holiday heart.

Honors student Jane Ryan heads to Manhattan for a college-scholarship competition. Her rebellious twin Roxy tags along to crash a video shoot. But anything can happen – and does – in a romp involving a pursuing truant officer, a smuggler, hunkalicious guys, and the girls' realization that when the chips are down, a sister can be the best friend of all.

Two twin brothers are living on a different sides of Berlin Wall after being separated after birth.

Dr. Drakken has an evil new plot for world domination, but his ultimate success depends upon finding out KP's weakness which may involve a new hottie at Middleton High School named Eric, who suddenly sparks feelings in Ron about Kim that resemble much more than friendship. To make matters worse, Bueno Nacho, Ron's favorite fast food chain has turned sour on him by bombarding him with little Devils.

Polly’s dreams of making it as an actor are shattered when her identical twin sister Amy lands the lead role in a huge TV show. Mistaken for her famous sister at every turn, Polly decides to use Amy’s celebrity for her own advantage – free clothes, free booze, casual sex… with hilarious and disastrous consequences for them both.