SOMETHING'S WRONG WITH ME...

Summary
As Tasi's about to leave the fortress in search of the village, she experiences yet another vision of Jonathan, one of her crewmembers, being slaughtered in one of the fortress' chambers by a ghoul, an unseen monstrous foe, moments before stumbling onto his deceased body with his head completely crushed. Mark then descends downstairs while being chased by the previously mentioned monster, as it claws its way through doors in an attempt to catch up to him, but he manages to slip outside at the very last second.

After catching her breath, Tasi walks by the abandoned fort's courtyard as she recalls yet another memory of herself and her crew making their escape from the ghoul through a large gate at the pass. Seeing that the gate is too heavy to move, Mark boards a nearby derelict tank with the intent of breaching the pass' fortification via its armament, however, to his dismay, the tank's ammunition is entirely depleted, forcing him to look elsewhere for the ammo. In the arsenal room, Mark searches around for ingredients to make the gunpowder while looking over a number of grotesque sights of torture. After all of the ingredients have been collected, Mark assembles the tank shell and goes back outside.

Once the tank's chamber has been loaded, Mark blasts through the gates in a single shot, but before he could exit the vehicle, the gun's force disturbs the sands beneath it, causing the tank to plummet down to the fortress' cistern.

As Tasi regains her consciousness and checks in on her pregnancy, she notes that her ribs, having been previously broken from the fall, are now fully healed by unknown means. After freeing himself from the tank, now buried beneath a pile of rubble, Mark proceeds to explore the depths of the cistern.

Rummaging around the tumor-infested reservoir ruins, solving platform puzzles, finding notes and memory capsules, while avoiding ghouls crawling through tunnels, Tasi discovers that the underground facility was once inhabited by ancient alien-like civilization who worshipped Empress Tihana (Tin Hinan) to the point where they desired to make her immortal by brewing an elixir of eternal life. After swimming through the cistern's sewage system and barely avoiding a pursuing ghoul, Tasi is guided by the glowing ball of light from before to a torrent that feeds into an oasis.

Emerging out of the stream, Tasi panics after not being able to feel her child's movement and begins to curse the illuminating sphere. Up ahead, she finds a statue of the Empress and a note previously left by her. Reading the blood-stained letter, Tasi recalls that she had previously visited this location with her crew, noting that the group witnessed Tihana's apparition as she appear to them in broad daylight, offering to heal their wounded colleagues and provide salvation from the desert. Reluctantly agreeing, Tihana points them to a glowing amulet, which turned out to be the locket Tasi's been wearing on her wrist in present time, that opened up a portal to another location. Before passing through, Tasi promises to return for her husband Salim, who was still alive at this time.

As the letter causes her even more confusion, Tasi ventures through the oasis, not long after receiving a call from the Doctor. He instructs her to meet up with them at the village, promising to answer all of her questions. Climbing up the hill, Tasi spots smoke in the distance, as she rushes through the canyon to reach the other side, but is caught in quicksand that feeds into a portal leading to the other world.