Will's best friend and roommate, Belcher, returns from the dead as a cocky, mischievous and perverted ghost who discovers that Will has shacked up with his cousin, Krista. Belcher does everything in his ghostly powers to end the relationship.
In the mid-1990s, university art majors Xu Lai (Xu Zheng) and Yang Yi (Du Juan) fell in love, but then Yang was transferred to the Chinese University of Hong Kong and Xu has never seen her since. Almost twenty years later, the already bald Xu has long forgotten his dreams of becoming an artist, but he can never forget Yang even though he enjoys a comfortable life with his loving wife Cai Bo (Zhao Wei), the only major problem between them being the repeated failure conceiving a child. During a vacation in Hong Kong with Cai's overbearing family, Xu plans to secretly visit Yang, but Cai Bo's goofy young brother Cai Lala (Bao Bei'er) — always carrying a video camera in hand for his documentary project — tags along like his unwelcome shadow to spoil the rendezvous. Meanwhile, in Hong Kong, Wong Jing is filming another riotous gangster movie, while 2 police officers (Sam Lee and Eric Kot) investigate a murder.
Dave Stangle (Zac Efron) et Mike Stangle (Adam DeVine), deux frères inséparables, mettent la zizanie à chaque fête qu'organise la famille. Leurs parents les obligent alors à trouver chacun une cavalière pour le mariage de leur sœur Jeanie (Sugar Lyn Beard) afin de les empêcher de gâcher la fête...
En juillet 1969, craignant que la mission Apollo 11 échoue à se poser sur la Lune, l'armée américaine envoie Tom Kidman, un vétéran de la guerre du Viêt Nam, en Angleterre. Là-bas, celui-ci doit proposer à Stanley Kubrick de tourner la scène des premiers pas de l'homme sur la Lune, mais une suite d'événements l'amène à travailler avec un faux producteur et un faux Kubrick, qui espèrent profiter de l'argent de la production pour rembourser un gang mafieux.
Ed Cole (Haley Joel Osment) feels like he is letting his life go by without him. He leaves his job at a bagel shop and works as an after-school detention teacher after impressing the principal (Matt Walsh). He moves out of his apartment, allowing his roommate JT (Glen Powell) to engage in kinky sex with his girlfriend Ally (Castille Landon). While working with his students, Ed realizes most of the troubled youths are sexually confused, and begins an after school sex ed program. At the same time JT convinces Ed to have sex with someone to end his dry spell, leading to a disastrous blind date with Trish (Abby Elliott), a former co-ed.
Alexis "Lexi" Fish lives in L.A. and works as a mascot and occasional phone sex operator, struggling to get by after the death of her husband. After an estranged aunt dies she returns to New York to attend her funeral and while there butts heads with her overly critical mother, Estella. Her well-meaning older sister, Kayla, meanwhile arranges a last-minute job for Lexi to plan the Bat Mitzvah party for the daughter of one of their acquaintances, Mrs. Wasserstein.
Deux policiers ripoux font du chantage à des criminels au Nouveau-Mexique jusqu'au jour où ils croisent la route d'un gérant d'un club de strip-tease, beaucoup plus dangereux qu'il en a l'air.