A common plotline could be that Rachel is kidnapped for ransom. Her family or the glee club is demanded to pay a large sum of money for her release. Another is that she is kidnapped by a deranged fan who is obsessed with her singing. This fan might want her to sing only for them.
One plotline might involve a rival school trying to gain an edge in competitions. They figure that without Rachel, New Directions will be much weaker. So they kidnap her to keep her from performing. The glee club then has to find a way to rescue her and still compete successfully.
In some fanfictions, Rachel could be kidnapped by a talent scout gone bad. This scout saw her potential but instead of recruiting her the right way, they kidnap her to force her into a contract. Her friends and family have to fight to free her from this illegal and immoral situation.
In the fanfiction, perhaps Rachel's kidnapping is part of a bigger mystery. It could be related to some secrets in the world of glee clubs. For example, there might be an underground competition or a shadowy organization that wants to use Rachel's talent for their own purposes. Her friends in New Directions then have to work together to find her, using their own skills and the power of music to track her down.
One interesting plotline could be them collaborating on a big musical number for a school competition. They might start off with different ideas but then combine their talents to create something amazing.
One possible plotline could be that Rachel succumbs to an illness. Maybe she has been struggling with a long - term health issue that finally takes its toll. Her friends in the Glee club are devastated and they come together to remember her through song, just like they always did when she was alive. They might perform a special memorial concert in her honor.
Another plotline might involve Wes helping Rachel overcome her stage fright in a different way than the other characters in Glee. He could introduce her to some unique relaxation techniques or a new performance approach that really changes her on - stage presence for the better.
One possible storyline could be how Rachel's pregnancy affects her dreams of stardom. Maybe she has to put her Broadway aspirations on hold and deal with the reactions of her friends and family in the Glee club. Another could be about the father of the baby, if it's Finn, how they navigate their relationship while also preparing for a new life. Or it could focus on how the pregnancy changes her role within the Glee club, like taking on more of a mentoring role to the younger members as she experiences this major life event.
One possible plotline could be how Rachel and Finn deal with the reactions of their friends and family. Their friends in Glee club might be shocked at first but then rally around them for support.
A common and interesting plotline is their collaboration on a Broadway - style musical production. They could be the leads and have to work through their different acting and singing styles. Blaine might bring his charm and smooth vocal style while Rachel's more powerful and diva - like presence creates a contrast that they have to blend together for the success of the show.
One interesting plotline could be how Sam and Rachel deal with the reactions of their friends and family. Their friends might be shocked at first, but then come around to support them. Another could be the two of them trying to balance their dreams, like Rachel's Broadway aspirations and Sam's own career goals, while also preparing for a baby.
It could be that Rachel criticizes Kurt's fashion choices in a very public and mean - spirited way in the glee club. Since fashion is an important part of Kurt's identity, this could deeply wound him and create a hostile environment between them until they both learn to respect each other's differences.
In such a fanfiction, they might be rescued by their friends from Glee club. Maybe Finn and Puck would team up to find them, using their knowledge of the local area.