Tomb Raider: Underworld - Plot

Plot

Tomb Raider: Underworld begins with Lara Croft's mansion exploding and being engulfed in flames. The game then rewinds back in time to a week before the explosion, just after the events of Tomb Raider: Legend. Lara is searching for Avalon, hoping it will lead her to an explanation for the disappearance of her long lost mother. Underneath the Mediterranean Sea, Lara discovers an ancient temple designating itself as "Niflheim", one of the many Norse underworlds. Deep within, she recovers one of Thor's gauntlets, after a lengthy battle with Amanda Evert's mercenaries and an encounter with an imprisoned Jacqueline Natla, on Amanda's ship. Natla tells Lara that the Norse underworld, Helheim and Avalon are one and the same and that she will need to find Thor's Hammer to open the Underworld and find her mother. Lara soon discovers that she will have to find Thor's other gauntlet and his belt if she wants to find and wield the hammer. Natla provides Lara with a starting point for her search in this quest – coastal Thailand. In Thailand, Lara doesn't locate the next gauntlet, but she finds evidence that her father had found it there and removed it before he died. She also discovers a message that reveals that her father and Natla had been working together at some point and that the relationship had not ended well. Lara is able to deduce where her father hid the missing gauntlet.

Back at the Croft Manor, Lara finds her father's secret office buried beneath her home. Upon his desk, Lara discovers the gauntlet as well as a tape-recorded message, warning her that Helhiem contains a powerful weapon. Suddenly, an explosion occurs and Lara's home becomes engrossed in flames, leading back to the opening events of the game. Zip tries to shoot Lara and claims that "Lara" detonated the bomb. When Lara returns to the burning office to recover the security footage, she encounters her doppelgänger who kills Alister Fletcher. After his emotional death, Lara resolves to continue with her quest. In Mexico, Lara finds both Thor's Belt and some ancient pictographs linking the weapon in Helheim to Jörmungandr, a mythical Norse sea-serpent, brought about by the seventh age. Her next stop are ruins on Jan Mayen Island that correlate to Valhalla. It is here that Lara finally recovers Thor's Hammer. In the meantime, Zip has managed to track Amanda down to a sister-ship of the one Lara sank earlier. Armed with Mjolnir, Lara boards the vessel and interrogates Natla once again. Natla provides Lara with the coordinates of Helheim, but points out that Lara does not know the Ritual of Odin, which is needed to open its gates, so Lara reluctantly strikes a bargain with Natla and frees her from her cell.

They rendezvous in the outer chambers of the Helheim complex, deep below the Arctic Sea. With the ritual performed, Lara is able to use Mjolnir to open the gates of Helheim. Along the way, Lara discovers the horrifying truth of her mother's fate – she has been turned into a thrall, where Lara forcibly shoots her. Natla reveals the true extent of her manipulation of Lara, also revealing that she was the one who killed Lara's father. Natla goes, leaving the doppelgänger to kill Lara, but Lara is saved by Amanda. It is revealed that the Midgard Serpent was a Norse metaphor for the many tectonic divisions that encircle the world, beneath the seas. The doomsday device was built upon the most unstable junction of these lines and its activation would cause massive volcanic activity across the whole planet and the destruction of most of humanity. Lara successfully destabilises the device and strikes Natla with Mjolnir, sending her down into the pool of deadly eitr below. Lara and Amanda escape together using the dais, like the one that brought Lara's mother to Helheim, teleporting back to the temple in Nepal (from Tomb Raider: Legend).