There are fanfictions where the Warehouse 13 agents go on a mission to recover an artifact that has been lost for centuries. This artifact could hold the key to saving the world from a great danger. Another type of storyline could be about a character from the Warehouse getting trapped in an artifact - like a mirror where they are stuck in a different dimension. And then the other agents have to find a way to get them out. There are also fanfictions that deal with the internal politics of the Warehouse, with different factions vying for control over the artifacts.
Well, some Warehouse 13 fan fictions involve exploring the backstories of the characters more deeply. For example, a fan fic could delve into Myka's life before she joined Warehouse 13, her family, and how that influenced her. Or there could be a story about Pete's first encounter with an artifact when he was a kid that set him on the path to becoming an agent. And then there are those fan fictions that create new adventures for the team, like they have to deal with an artifact that can control time and they get stuck in different eras.
A plot could involve a cross - over mission. The main characters from both 'Accidental Tourist' and Warehouse 10 have to work together to retrieve a powerful and dangerous item. They initially clash due to their different methods and personalities, but as they face various challenges during the mission, they learn to understand and respect each other. For example, the laid - back attitude of the 'Accidental Tourist' character might contrast with the more regimented approach in Warehouse 10, but they find a middle ground.
Another could be a 'what if' scenario. Like what if a certain character got injured along the way and how it would change the dynamics of the group. This could involve exploring the relationships between the characters as they deal with the unexpected situation.
Character backstories are a big part of Warehouse 13 fanfiction as well. Many writers like to fill in the gaps in the characters' pasts, such as what led them to become agents of the Warehouse. This can add more depth to the characters and make their present - day actions more understandable.
One idea could be a new agent arriving at Warehouse 13 with a mysterious past that turns out to be linked to an artifact that was thought to be lost forever. This new agent might unknowingly hold the key to controlling the artifact's power, causing a stir among the existing agents as they try to figure out how to handle the situation.
One interesting storyline could be a different take on the relationship between Klaus and Caroline. Maybe in the fanfiction, they team up to face a new and powerful enemy that neither of them could defeat alone. This would bring out new sides of their characters as they learn to trust and rely on each other more.
One interesting storyline could be the exploration of alternate universes within the Underverse setting. Characters might discover new powers or forms in these different realms.
One interesting storyline could be a reimagining of Batman's first encounter with the Joker in the 1939 fanfiction context. Maybe the Joker starts as a small - time criminal and Batman has to figure out his true motives early on.
One interesting storyline could be the Darkling's redemption. Maybe he realizes the error of his ways and tries to make amends for his past actions, which would be a huge character development shift.
There might be a fanfiction where one of the characters in 2gether gets a once - in - a - lifetime opportunity to study abroad. This creates a lot of emotional turmoil as they have to decide whether to pursue their dreams or stay with their friends and the person they might be in love with.