[s5e1] Episode #5.1 Here

: While everyone thinks he is away, Stefan is actually trapped in a safe at the bottom of a lake, repeatedly drowning.

: Daenerys Targaryen faces a growing insurgency in Meereen from the "Sons of the Harpy" while struggling to control her growing dragons. Stranger Things: " The Crawl " (Upcoming/Speculative)

This episode focuses on the power vacuum left after Tywin Lannister's death. [S5E1] Episode #5.1

: The season opens with a rare flashback of young Cersei visiting a woods witch who prophesies her downfall by a "younger, more beautiful queen".

: Now human, Katherine Pierce struggles with mundane physical problems like blisters and common illnesses. Other Notable S5E1 Premieres The Vampire Diaries season 5 episode 1 review - Den of Geek : While everyone thinks he is away, Stefan

: The episode introduces a younger version of Will Byers, portrayed by Luke Kokotek.

The final season opener deals with the immediate aftermath of Vecna's rift opening in Hawkins. : The season opens with a rare flashback

Because you didn't specify the show, I've broken down several popular TV series that feature a season 5, episode 1 (S5E1). If your show isn't here, please tell me the name! Game of Thrones: " The Wars to Come "