Genius, billionaire, and playboy Tony Stark, who has inherited the defense contractor Stark Industries from his father, is in war-torn Afghanistan with his friend and military liaison, Lieutenant Colonel James Rhodes to demonstrate the new "Jericho" missile. The convoy is ambushed and Stark is critically wounded by one of his own rocket propelled grenades. He is captured and imprisoned in a cave by the terrorist group the Ten Rings, and an electromagnet is grafted into his chest by fellow captive Yinsen to keep the shrapnel shell shards that wounded him from reaching his heart and killing him. Ten Rings leader Raza offers Stark freedom in exchange for building a Jericho missile for the group, but Tony and Yinsen agree Raza will not keep his word.
Since the dawn of civilization, Apocalypse, the first and most powerful mutant was worshiped as a god. Amassing the powers of many other mutants, he became immortal and invincible. Upon awakening after thousands of years, he is disillusioned with the world as he finds it and recruits a team of powerful mutants to cleanse humanity and create a new world order, over which he will reign. As the fate of the Earth hangs in the balance, Raven with the help of Professor X must lead a team of young X-Men to stop their nemesis.
In 1989, scientist Hank Pym resigns from S.H.I.E.L.D. after discovering their attempt to replicate his Ant-Man shrinking technology. Believing the technology is dangerous, Pym vows to hide it as long as he lives. In the present day, Pym's estranged daughter, Hope van Dyne, and former protégé, Darren Cross, have forced him out of his own company. Cross is close to perfecting a shrinking suit of his own, the Yellowjacket, which horrifies Pym.
Bruce Wayne and Lex Luthor are both nominated for the Man of the Year award, and Wayne wins. As he is making his speech, the Joker breaks in with the Riddler, Harley Quinn, the Penguin, Two-Face, Poison Ivy, Bane, Catwoman, and steals the award, as well as money and gems. Batman arrives and stops everyone except the Joker, who escapes on his boat, but Robin's helicopter picks up Batman. When the rope holding Batman is broken, he calls in the Batwing and defeats the Joker. Meanwhile, Luthor is running for president, but his poll figures are terrible. He learns that the Joker knows how to produce more Kryptonite, and can make a gas that makes people love him, which will help Luthor win the election and defeat Superman. He breaks the Joker out of Arkham Asylum and promises him the use of Luthor's De-Constructor weapon to defeat Batman by dismantling all his gadgets and vehicles.
April O'Neil (Megan Fox), a reporter for Channel 6 Eyewitness News in New York City, investigates a crime wave by criminals called the Foot Clan. At a dock at night, she sees the Foot raiding cargo containers. After an unseen vigilante attacks the thieves, April notices a symbol left behind. April's supervisor Bernadette Thompson (Whoopi Goldberg) and her coworkers are oblivious to her story. Later while covering a charity event thrown by Sacks Industries, April expresses gratitude to the company's CEO Eric Sacks (William Fichtner), who was her late father's (Paul Fitzgerald) lab partner.
In the Lego universe, the wizard Vitruvius attempts to protect a superweapon called the "Kragle" from the evil Lord Business. He fails to do so, but prophesies that a person called "the Special" will find the Piece of Resistance capable of stopping the Kragle.
Twenty years ago, Professor Charles Xavier and Erik Lehnsherr meet young Jean Grey at her parents' house to invite her to join their school. Ten years later, the industrialist father of Warren Worthington III discovers his son is a mutant as Warren tries to cut off his wings.
Lucy is a 25-year-old American woman living and studying in Taipei, Taiwan. She is tricked into working as a drug mule by her new boyfriend, whose employer, Mr. Jang, is a Korean mob boss and drug lord. Lucy delivers a briefcase to Mr. Jang containing a highly valuable synthetic drug called CPH4. After seeing her boyfriend shot and killed, she is captured. A bag of the drug is forcibly sewn into her abdomen and that of three other drug mules who will also transport the drug for sale in Europe. While Lucy is in captivity, one of her captors kicks her in the abdomen, breaking the bag and releasing a large quantity of the drug into her system. As a result, she begins acquiring increasingly enhanced physical and mental capabilities, such as telepathy, telekinesis, mental time travel, and the ability not to feel pain or other discomforts. She kills off her captors and escapes.
One year after the famed Battle of Thermopylae, Dilios, a hoplite in the Spartan Army, begins his story by depicting the life of Leonidas I from childhood to kingship via Spartan doctrine. Dilios's story continues and Persian messengers arrive at the gates of Sparta demanding "earth and water" as a token of submission to King Xerxes; the Spartans reply by killing and kicking the messengers into a well. Leonidas then visits the Ephors, proposing a strategy to drive back the numerically superior Persians through the Hot Gates; his plan involves building a wall in order to funnel the Persians into a narrow pass between the rocks and the sea. The Ephors consult the Oracle, who decrees that Sparta will not go to war during the Carneia. As Leonidas angrily departs, a messenger from Xerxes appears, rewarding the Ephors for their covert support.
In 965 AD, Odin, king of Asgard, wages war against the Frost Giants of Jotunheim and their leader Laufey, to prevent them from conquering the nine realms, starting with Earth. The Asgardian warriors defeat the Frost Giants and seize the source of their power, the Casket of Ancient Winters.
Five years after Agent K's retirement, Agent J (Will Smith) is now a top operative for the MIB, the New York City-based agency that secretly monitors and regulates extraterrestrials' activity on Earth. J has no permanent partner since K resigned and Agent L returned to work in a morgue. Subsequent partners have not lived up to J's standards, so he neuralyzes them back to civilian status.
In 1945, Logan is held in a Japanese POW camp near Nagasaki. During the atomic bombing of Nagasaki, Logan rescues an officer named Ichirō Yashida and shields him from the blast.
During a raid in the Middle East, a probationary secret agent sacrifices himself to save his team. Feeling guilt over the loss of his colleague, Harry Hart, code-named "Galahad", delivers a bravery medal to the agent's widow, Michelle Unwin, and her young son, Gary "Eggsy", saying that if they ever need help, they should call the phone number on the back of the medal and deliver a coded message.
The mayor of Gotham City orders District Attorney Harvey Dent (Billy Dee Williams) and Police Commissioner James Gordon (Pat Hingle) to increase police activity and combat crime in preparation for the city's bicentennial. Reporter Alexander Knox (Robert Wuhl) and photojournalist Vicki Vale (Kim Basinger) begin to investigate reports of a vigilante dubbed "Batman", who is targeting the city's criminals.
At the White House, brainwashed teleporting mutant Nightcrawler tries to assassinate the President of the United States but fails and escapes, leaving a note demanding "mutant freedom now." At Alkali Lake, X-Men member Wolverine finds nothing left of the military base from the previous movie. He returns to Professor Xavier's school for mutants, while fellow X-Men Storm and Jean Grey find Nightcrawler with the help of Xavier and the mutant-tracking machine Cerebro.