Online Star Trek Into Darkness (2013)

In 2259, the Enterprise is on a survey mission to the planet Nibiru, studying a primitive culture. Captain James T. Kirk and First Officer Spock attempts to save the planet's inhabitants  from a volcanic eruption. When Spock's life is endangered, Kirk violates the Prime Directive, exposing the Enterprise to the native inhabitants, a decision Spock disagrees with. Returning to Earth, Kirk loses command of the Enterprise and Admiral Christopher Pike is reinstated as the commanding officer. Pike manages to convince Admiral Marcus to allow Kirk to continue as his first officer on the Enterprise, rather than being sent back to the Academy. Meanwhile, a secret Section 31 installation in London is bombed by a renegade Starfleet agent, Commander John Harrison. In a meeting to discuss the situation, Harrison attacks in a jumpship, killing Pike. Kirk disables the jumpship, however Harrison uses a prototype portable transwarp transporter device to escape to Kronos, the Klingon homeworld, knowing Starfleet would be unable to follow. Admiral Marcus orders the Enterprise to kill Harrison, arming them with 72 prototype photon torpedoes, shielded and untraceable to sensors. Chief engineer Montgomery Scott resigns his duties in protest when Kirk denies Scott's request to examine the weapons for safety reasons. Pavel Chekov is promoted in his stead and Dr. Carol Wallace, a weapons specialist, joins the crew. Spock, Dr. Leonard McCoy and Uhura convinces Kirk it would be better to capture Harrison and return him to Earth for trial, rather than killing him. En route, the Enterprise suffers an unexpected coolant leak in the warp core, disabling the ship's warp capabilities. Kirk leads a deniable operation to Kronos in a confiscated civilian vessel. Approaching Harrison's location, they are ambushed by Klingon patrols. Harrison easily dispatches the Klingons, then unexpectedly surrenders after learning the exact number of torpedoes locked on his location. On the Enterprise, Wallace is revealed as Dr. Carol Marcus, the Admiral's daughter, who along with Dr. McCoy, opens a torpedo at the behest of Harrison, revealing a man in cryogenic stasis. Harrison reveals his true identity as Khan, a genetically-engineered superhuman awoken by Marcus from a 300-year suspended animation. Khan reveals his crew was held hostage by Marcus to force him to develop weapons and warships for Starfleet in preparation for a war between the Federation and the Klingons. Khan attempted to smuggle his crew out in the torpedoes he had designed, but was discovered. Believing Marcus had killed his crew, he instigated his attacks to avenge his family. Khan reveals Marcus had sabotaged the Enterprise's warp drive, intending for the Klingons to destroy the ship after firing the torpedoes at Kronos, giving him a casus belli for war. Acting on information from Khan, Kirk asks Scott to investigate a set of coordinates within the Solar System. The Enterprise is intercepted by a larger Federation warship, the USS Vengeance under the command of Marcus. Marcus demands that Kirk deliver Khan, but Kirk refuses. The Enterprise, with a hastily repaired warp drive, flees to Earth in order to report Marcus, however the Vengeance intercepts and disables it. Kirk offers to exchange Khan and the cryogenic pods in exchange for sparing the lives of his crew. Marcus refuses, transporting Carol Marcus to the Vengeance and ordering the Enterprise's destruction. The Vengeance suddenly loses power, having been sabotaged by Scott, who discovered and infiltrated the ship during his investigation. With the transporters down, Kirk and Khan, with the latter's knowledge of the warship's design, space-jump to the Vengeance. Meanwhile, Spock contacts his older self on New Vulcan, who informs him that Khan cannot be trusted. After capturing the bridge, Khan overpowers Kirk, Scott and Carol, killing Admiral Marcus and seizing the Vengeance. Khan demands from Spock the return of his crew in exchange for the three Enterprise officers. Spock complies, but had previously removed Khan's frozen crew and armed the warheads. Khan betrays their agreement, crippling the Enterprise, however the Vengeance is in turn disabled following the detonation of the torpedoes. With both starships powerless and caught in Earth's gravity, they begin to fall toward the surface. Kirk sacrifices himself by entering the radioactive reactor chamber to realign the warp core, saving the ship. Kirk succumbs to radiation poisoning, throwing Spock into a grief-stricken rage. In one final act of defiance against Starfleet, Khan crashes the Vengeance into San Francisco to destroy Starfleet headquarters. Fleeing the scene, Spock transports down in pursuit. While experimenting on a dead tribble, McCoy discovers that Khan's blood has regenerative properties that may save Kirk. Spock manages to subdue and capture Khan, and Kirk is revived. One year later, Kirk addresses a gathering memorializing the events, where he recites the "where no man has gone before" monologue. Khan is resealed in his cryogenic pod and stored with his crew, while Carol Marcus joins the crew of a recommissioned Enterprise, as it departs on a five-year exploratory mission.