Upper West Side, années 1950. Deux bandes de jeunes s'affrontent : d'un côté les Sharks dirigés par Bernardo et de l'autre les Jets, avec Riff à leur tête. Tony, lié au Jets, va s'éprendre de Maria, la sœur de Bernardo.
À la fin des années 1960, la star du Magicien d’Oz Judy Garland s’apprête à donner une série de concerts à Londres. Mais sa voix s’est fragilisée au fil du temps et Judy souffre, fragilisée par une vie entièrement consacrée à Hollywood et à sa carrière.
D'après la comédie musicale Cats. Chaque année, dans les ruelles sombres de Londres, un bal est organisé par Deuteronome lors d'une nuit extraordinaire et pleine de magie. Des chats tentent leur chance pour être l'élu, celui qui pourra entrer au paradis de la Jellicosphère, afin de renaître dans une nouvelle vie.
Cinq ans après les événements du premier film, sur l'île grecque Kalokairi. Sophie Sheridan (Amanda Seyfried) prépare la grande réouverture de l'hôtel de sa mère, Donna (Meryl Streep), un an après le décès de cette dernière . Elle est également poussée à bout de nerfs car deux de ses pères, Harry (Colin Firth) et Bill (Stellan Skarsgård), ne pourront pas venir à la réouverture et sa relation avec Sky (Dominic Cooper), lequel est à New York, connaît de plus en plus de vagues .
Tout est paisible et rangé dans le petit village d'Ipswich. Les gens sont aimables, discrets, se saluent entre eux et rien d'étrange ne se produit jamais. Alors le jour où les corps de cinq femmes assassinées sont retrouvés dans la rue London Road, le désarroi s'installe dans la communauté. Qui a pu commettre ce crime ? Le meurtrier est-il l'un d'entre eux ? Chaque citoyen devient alors suspicieux et nerveux. La rue entière est une scène de crime scrutée à la loupe par les yeux des curieux. Chacun y va de sa théorie et de ses hypothèses, mais le vrai meurtrier sera-t-il démasqué ?
Billion-dollar company Jones & Sunn is going public. Chairman Ho Chung-ping (Chow Yun-fat) has promised CEO Winnie Cheung (Sylvia Chang), who has been his mistress for more than twenty years, to become a major shareholder of the company. As the IPO team enters the company to audit its accounts, a series of inside stories start to be revealed.
In 1951, in Belleville, New Jersey, Tommy DeVito, narrating the story, introduces the audience to himself, Tommy's brother Nicky, and their friend Nick Massi, who perform together as The Variety Trio, and to a barber's son, 16-year-old Frankie Castelluccio, already well known in the neighborhood for his singing voice. Frankie has the admiration of Genovese Family mobster Angelo "Gyp" DeCarlo, who takes a personal interest in him.
In Harlem, 10-year-old Annie Bennett lives in foster care with several other girls in the care of the cruel Colleen Hannigan. She spends each Friday waiting outside the restaurant Domani's where she believes her parents will return to collect her.
A Baker and his Wife wish for a child but suffer under a curse laid upon the Baker's family by a Witch who found the Baker's father robbing her garden when his mother was pregnant. The Baker's father also stole some beans which caused the Witch's mother to punish her with the curse of ugliness. The Witch offers to lift the curse, but only if the Baker and his Wife obtain four critical items for her: a cow as white as milk, a cape as red as blood, hair as yellow as corn, and a slipper as pure as gold.
In County Durham, the 1984-85 coal miners' strike is just beginning ("The Stars Look Down"). Motherless eleven-year-old Billy is required to stay behind after his boxing class and finds his way into a ballet class run by Mrs. Wilkinson. He is the only boy, but becomes attracted to the grace of the dance ("Shine"). The secret is at first easily kept, as the only person home at the time is his grandmother. She reveals her abusive relationship with her dead husband and that she too loved to dance, which made everything all right ("Grandma's Song").
After his mother, Naima, is evicted from their Baltimore apartment, teenage Langston is sent to spend the holidays with his estranged grandparents in New York City. When Langston arrives in the city, he just misses his grandparents and, shortly after, is robbed of his possessions. Entering a hotel to get directions to his grandparents place, Langston is accused of trying to take a wallet and is quickly taken in by the police. While in the holding cell, he meets a man who makes fun of him for stealing wallets. Shortly after, Langston is reunited with his grandfather, the Reverend Cobbs, who takes him to his home.
The film starts in Afghanistan where an APC is on patrol while the passengers, are nervous as to whether they will still be alive ("Sky Takes the Soul"), before an ambush happens. Some time later Davy and Ally, two recently discharged British Army servicemen, return to their homes and families in Edinburgh after a tour in Afghanistan ("I'm on my Way"). Ally returns to his girlfriend Liz, a nurse who is Davy's sister. On Davy and Ally's first night home Liz introduces Davy to her English friend and colleague Yvonne at a pub, where Liz and Yvonne take part in some drunken story telling, a Scottish tradition ("Over and Done With"). Following from their blind date Davy and Yvonne strike up a romantic relationship ("Misty Blue") as Ally and Liz consider their future as a potential married couple ("Make my Heart Fly").