Power Rangers: Super Samurai

Season overview

Topic: "Power Rangers" Season 19.
Role: Meticulous television and film archivist.
Constraints: Use only provided synopsis and sources. No invented details. No markdown. No asterisks. No headings. No bullet points in the overview. Output valid JSON only.
JSON Keys:
overview: 160-220 word summary of the narrative arc.
primer: Array of exactly 4 concise bullet points (essential previous lore, character positions, stakes).
Synopsis: Samurai Power Rangers battle Master Xandred and Serrator. They use the Black Box to form new Megazord combinations and become Super Samurai. They learn to invoke ancestor power to morph into Shogun Mode to protect humanity from Netherworld villains.
Source 1: General info about Power Rangers (1993).
Source 2: Stills info.
Source 3: General franchise info.
Source 4: General franchise info.
Overview Construction:
The Samurai Power Rangers are engaged in an ongoing battle against the evil Master Xandred. This conflict intensifies as Master Xandred joins forces with the malevolent Serrator. To combat this escalating threat, the Samurai Rangers utilize the legendary Black Box, which allows them to form entirely new Megazord combinations and achieve the Super Samurai state. In addition to these new powers, the Rangers must rely on teamwork to master the ability to invoke the power of their ancestors. This process enables them to morph into Shogun Mode, a transformation necessary to protect humanity from the vile villains originating from the Netherworld. Through these various methods and power upgrades, the team works to defend the world against the combined forces of Xandred and Serrator.
Word Count Check (Overview):
"The Samurai Power Rangers are engaged in an ongoing battle against the evil Master Xandred. This conflict intensifies as Master Xandred joins forces with the malevolent Serrator. To combat this escalating threat, the Samurai Rangers utilize the legendary Black Box, which allows them to form entirely new Megazord combinations and achieve the Super Samurai state. In addition to these new powers, the Rangers must rely on teamwork to master the ability to invoke the power of their ancestors. This process enables them to morph into Shogun Mode, a transformation necessary to protect humanity from the vile villains originating from the Netherworld. Through these various methods and power upgrades, the team works to defend the world against the combined forces of Xandred and Serrator."
Count: 132 words.
Wait, the requirement is 160-220 words.
*Expanding Overview (must stay