Well, a really good plot I've read is where one member of Big Time Rush has a secret admirer. The admirer leaves little hints and gifts everywhere. As the story unfolds, the member discovers who it is and they share a very sweet and tender moment. It's full of mystery and romance.
One of my favorite plotlines in Big Time Rush love story fanfics is the 'opposites attract' scenario. For example, when a shy and introverted character falls for one of the outgoing Big Time Rush guys. It creates a really interesting dynamic as they learn from each other and grow together. There's also the 'forbidden love' plot where the character might be from a different social group or have some sort of obstacle in their relationship, like a disapproving family member or a career conflict. This adds a lot of drama and tension to the story.
A great moment is when they overcome a big obstacle together. For example, when they face public scrutiny about their relationship. They stand by each other, and their bond becomes even stronger. The way the fanfiction portrays their unity and love in the face of difficulties is really inspiring.
Another common plot is James dealing with a family crisis while still being in the band. His family might be facing financial problems or a health issue, and he has to find a way to support them without sacrificing his music career. This shows his loyalty to both his family and the band, and how he grows as a person through the tough times.
A fanfic could center around a mystery on their set. There are strange things happening like missing instruments and unexplained noises. The boys team up to solve the mystery and find out that it's a jealous rival trying to sabotage their new album.
You should also consider their goals and dreams as part of the friendship. Maybe they all have different dreams but they support each other to achieve them. For example, one wants to be a great songwriter and the others help him by giving feedback and motivation. Start with a basic outline and then expand on it as you write.
One popular plot is Katie trying to help James with his songwriting in secret. She has a natural talent for it but doesn't want the other guys in Big Time Rush to know she's involved. Another plot could be a misunderstanding where James thinks Katie is interested in one of his bandmates, leading to some comical jealousy situations. There's also the idea of them going on an adventure together, like getting lost in a new city during a tour and having to rely on each other to find their way back.
One Big Time Rush imagine story could be that they discover a hidden portal backstage during a concert. They step through it and find themselves in a magical world where music creates the landscape. The trees are made of guitar strings and the rivers flow with melodies. They have to use their musical talents to find their way back to the real world while also having an amazing adventure in this strange new place.
To write a compelling Big Time Rush love story, first, really understand the personalities of the characters. For example, if you're writing about Kendall, you know he's often the leader, so his love story might involve taking charge in the relationship. Then, create interesting situations for them to meet and interact, like a charity event or a music competition.
One popular storyline is the boys getting into a huge misunderstanding but their friendship prevails in the end. For example, there could be a situation where they are wrongly accused of something and they have to work together to clear their names, which strengthens their bond.
There might be a fanfiction where a fan wins a contest to style one of the Big Time Rush member's hair. The fan is super nervous but has this amazing vision for a haircut. It could be a story full of anticipation as the fan tries to execute their idea. There could be some obstacles like not having the right tools at first, but in the end, they create a masterpiece haircut that gets a lot of attention from the media and other fans.