Slayers: Slayers Try

Season overview

Role: Meticulous television and film archivist.
Task: Create a JSON object for "Slayers" Season 3.
Keys: overview (160-220 word summary) and primer (array of exactly 4 concise bullet points).
Constraints: Use ONLY provided synopsis and sources. No invented facts. No markdown. No asterisks. No headings. No bullet points in the text (the primer is an array). Output valid JSON only.
Input: TMDB Season Synopsis and four sources.
Synopsis:
Demons imposed a magical barrier for nearly a millennium, trapping people inside.
The barrier is now broken.
Several kingdoms want to explore the lands once beyond their grasp.
A peace delegation is established to contact inhabitants of the new world.
Lina Inverse (young sorceress) receives a message from Filia ul Copt.
Filia wants to hire Lina and her friends for a task involving the outside realm.
Filia tests them by pitting them against a dragon in a city.
After proving themselves, Lina and her adventurers set off for unexplored lands.
A worrying prophecy awaits them.
Source 1: General info (Action & Adventure, Sci-Fi & Fantasy, Animation).
Source 2: Cast/crew info (no plot details).
Source 3: Lina Inverse's life revolves around food, treasure, and fighting. Mentions Gourry G... (dim-witted but good-natured swordsman).
Source 4: Slayers inspired spin-offs, manga, anime, etc.
Overview Construction:
For nearly a millennium, a magical barrier imposed by demons has prevented people from reaching the outside world. With this barrier now broken, various kingdoms are seeking to explore the lands that were previously inaccessible. To facilitate this, a peace delegation has been established to make contact with the inhabitants of the newly reachable realm. During this time, the young sorceress Lina Inverse, whose life is centered around food, treasure, and fighting, receives a message from a mysterious woman named Filia ul Copt. Filia expresses interest in hiring Lina and her companions for a specific task that will lead them to the outside realm. Before hiring them, Filia tests the group's capabilities by pitting them against a dragon in the middle of a city. Once they have proven their strength, the sorceress and her fellow adventurers depart for the unexplored lands. As they embark on this journey into the unknown, they face the prospect of many adventures and a worrying prophecy that awaits them in the lands beyond