Ep 1. This is the Part Where You Run

In the first episode of Legacies season 1, titled "This is the Part Where You Run," viewers are introduced to a whole new generation of supernatural beings attending the Salvatore School for the Young and Gifted. Set in a town called Mystic Falls, the show follows Hope Mikaelson - a tribrid (half witch, half vampire, half werewolf) - as she navigates through the challenges of being a teenager while also dealing with her supernatural abilities.

As the episode opens, we see Hope trying to master control over her powers. She's struggling with keeping her werewolf side at bay, but seems to be making progress. On her way to school, she encounters a new student named Landon, who is running away from something or someone. The two start talking and Landon ends up taking Hope's bracelet (which is a powerful tool for her) to bribe someone in order to get some food. While trying to recover it, they end up stumbling upon a group of students - Alaric Saltzman (who runs the school), MG, Rafael, and Lizzie - who are on a mission to capture a monster that is terrorizing the town.

The monster is described as a "Gargoyle," and the group has a plan to lure it into a trap. However, things don't go according to plan, and the Gargoyle ends up attacking them. Hope - who has a vendetta against monsters due to her past experiences - jumps into action to protect her new friends. She uses her powers to burn the creature alive, but not before it kills Landon (who's revealed to be a human).

Things get complicated when Landon's body goes missing, leaving everyone wondering if he's really dead or if something supernatural is at play. Meanwhile, a new teacher - Emma - arrives at the school to help with the aftermath of the Gargoyle attack. She's an expert in monster biology and is intrigued by the mysterious disappearance of Landon's body. She starts conducting experiments to uncover what might have happened to him.

Towards the end of the episode, Hope - who's feeling guilty for getting Landon involved in the supernatural world - sneaks out of the school to find him. She finds his journal and discovers that he's been keeping a lot of secrets. It's revealed that Landon has a troubled past and was on the run from a group of supernatural beings called "the Knife" who are after a special artifact that he possesses.

The episode ends with Hope returning to the school, with the artifact in hand, revealing that she found it in Landon's possession. While everyone is confused about what's going on, Emma notices that the artifact is actually a key that can unlock something. She warns everyone that there might be dangerous consequences if they use it.

Overall, the first episode of Legacies sets up an intriguing storyline with a lot of potential for twists and turns. The show does a good job of introducing the new characters and establishing the rules of the supernatural world they inhabit. It's clear that Hope Mikaelson will be the main protagonist, and her tribrid status adds an interesting dynamic to the show. With the mystery of what happened to Landon and the potential danger of the key he possessed, viewers will certainly be left on the edge of their seats, waiting to see what happens next.