Cuckoo: Series 5

Season overview

Task: Create a JSON object for "Cuckoo" Season 5.
Keys: overview (160-220 words), 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 (though primer is an array). Output valid JSON only.
Target: Season 5 of the series "Cuckoo".
TMDB Season Synopsis: "Ken thinks he's hit the big time when he discovers a wealthy half sister he never knew he had, but her fortunes and his hopes are soon reversed."
Source [1]: General overview. Ken is an over-protective father.
Source [2]: British sitcom, started 25 Sept 2012 on BBC Three. Stars Andy Samberg, Greg Davies, Helen Baxendale, Taylor Lautner, Andie MacDowell, Tamla Kari, Esther Smith, Tyger Drew-H.
Source [3]: Cast and crew info.
Source [4]: Ken is an over-protective father of a girl who impulsively married an American hippie on her gap year.
Source [5]: Unrelated film info.
Overview:
The narrative for season five of Cuckoo centers on Ken, who experiences a significant shift in his circumstances. Ken believes he has achieved great success after discovering that he has a wealthy half-sister whom he had never previously known existed. This discovery initially leads him to believe he has hit the big time. However, the situation undergoes a dramatic change as both his personal hopes and the fortunes of his newly discovered relative are reversed. This season explores the impact of this unexpected family connection and the subsequent reversal of Ken's expectations. The series, which is a British sitcom, features a cast including Andy Samberg, Greg Davies, Helen Baxendale, Taylor Lautner, and Andie MacDowell. As a comedy and drama, the show follows the life of Ken, an over-protective father dealing with the fallout of his daughter's impulsive marriage to an American hippie during her gap year. The season follows the trajectory of Ken's newfound optimism as it meets the reality of his sister's changing financial status.
Word Count Check (Overview):
"The narrative for season five of Cuckoo centers on Ken, who experiences a significant shift in his circumstances. Ken believes he has achieved great success after discovering that he has a wealthy half-sister whom he had never previously known existed. This discovery initially leads him to believe he has hit the big time. However, the situation undergoes a dramatic change as both his personal hopes and the fortunes of his newly discovered relative