'Game of Thrones' Season 6 Episode 6 spoilers: Lannister and High Sparrow showdown expected

From the harrowing fate of Bran Stark's friends in Three Eyed Raven's cave, the focus of HBO's hit fantasy TV series "Game of Thrones" will return to King's Landing, as the House of Lannister is planning to seize full power once more by eradicating the Faithfuls.
To recap the fifth episode of Season 6 called "The Door," Sansa (Sophie Turner) and Jon Snow (Kit Harington) are busy planning their siege on Winterfell to overthrow the House of Bolton led by the menacing psychopath Ramsay Bolton (Iwan Rheon). Sansa wants to take back everything that was stolen from her family, including the Kingdom of the North, but doing that will be quite challenging as Ned's children are both aware that their current number of men is no match to Ramsay's massive army. However, Jon and Sansa continues to gather allies to not only reclaim Winterfell from the Boltons, but also to save their younger brother Rickon (Art Parkinson) whose life now lies in Ramsay's hands.
Fresh from the epic burning of all the Dothraki lords alive in a tent, Daenerys was also seen in the episode, appearing to have gained the trust and loyalty of the whole Dothraki tribe. Together with her newly acquired man force, Daenerys sets on a journey back to Meereen, although she decided not to bring Ser Jorah (Iain Glen) with her, even if the latter saved her life just recently.
Perhaps the main sequence of the episode happened in the cave of Three Eyed Raven, as the Night's King together with his White Walker army learned about Bran's (Isaac Hempstead Wright) location and attacked the cave. Interestingly, Bran exhibited an incredible feat by using his warging abilities while also viewing the past. He controlled Hodor (Kristian Nairn) into saving the group. However, to his surprise, Bran learned that the reason that Hodor's mind was broken is because of him. Apparently, using his warging ability on Hodor while visiting the past caused the young Hodor to lose his mind, saying repeatedly the phrase he had heard from the future, "hold the door." It was further shortened to "hodor," the word which the kind-hearted giant has spoken for the rest of his life. Unfortunately, the episode ended tragically with Three Eyed Raven, Bran's direwolf summer, and the inhabitants of the Forest getting killed. Hodor appeared to have suffered injuries from the white walkers while keeping the door shut, presumably dying in the process.
In the next episode, the tension will escalate in King's Landing as Cersei Lannister (Lena Headey), together with his twin brother Jaime (Nikolaj Coster Waldau), plans to overthrow the High Septon and his followers. The Episode 6 trailer reveals Margaery Tyrell (Natalie Dormer) about to make her walk of atonement as her punishment imposed by the High Septon, but the House of Lannister was seen conniving with the Tyrells for the first time to gather an army huge enough to eradicate the Sparrows and all other Faithfuls who had tarnished their great names.
As reported by Independent UK, the title of the upcoming episode can be attributed to the phrase usually spoken by the Dothraki, suggesting that the episode will also show Daenerys with the Dothraki army marching back to Meereen.