One possible storyline could be Percy joining them on a quest to retrieve a powerful ancient artifact. They might face various monsters along the way, like a Hydra or a group of harpies. Percy's water powers would be useful in combating water - based threats, while Annabeth's strategic mind would help plan their moves. Thalia with her lightning - based abilities could provide a strong offensive, and Luke, despite his later turn to the dark side in the original series, could start off as a valuable ally here, using his sword - fighting skills.
A great storyline could involve them getting trapped in a mysterious, enchanted forest. Percy discovers a hidden spring that has some strange magical properties. Annabeth tries to figure out the logic behind the forest's enchantments. Thalia has to deal with her fear of being enclosed in the forest. Luke might be tempted by some dark force within the forest that offers him power, and the others have to convince him not to give in. This would create a lot of character - driven drama and tension.
Another idea is that they are all summoned to a special training ground by the gods. Here, they have to compete against other demigods in various challenges. Percy has to use his new - found skills to keep up with the more experienced Annabeth, Thalia and Luke. Annabeth struggles with the physical challenges as she is more used to mental ones. Thalia has to control her temper when she faces some unfair challenges. Luke starts to show signs of his jealousy towards Percy, which could lead to future conflicts.
Percy's sense of humor and ability to find the fun in difficult situations can lighten the mood when Thalia is being too serious or Annabeth is stressing out. However, his lack of attention to detail might annoy Annabeth. Thalia's protectiveness over her friends can mesh well with Percy's loyalty. But her quick temper can lead to arguments, especially if Percy accidentally steps on her toes. Luke's smooth - talking ways might initially charm Annabeth and Percy, but as they get to know him better, his true personality will start to grate on them, creating a rift in the group dynamic.
One great non - sexual storyline could be about their adventures together in the world of Greek mythology. For example, they might team up to rescue a captured demigod from a powerful monster. Thalia's skills with her spear and Percy's control over water could be combined in an epic battle. Another idea is a story where they are on a quest to find a lost artifact that has the power to save Camp Half - Blood from a new threat. They could face various challenges along the way, like tricky puzzles and dangerous traps.
One possible storyline could be the challenges Thalia faces while pregnant in a world full of mythological threats. She might have to rely on her friends more than ever. For example, Percy could be there to protect her from monsters that target her because of her condition. Another could be the emotional turmoil she goes through, as being pregnant might change her role in the group and her own self - perception. She could struggle with how this new situation affects her goals and dreams within the context of the Percy Jackson universe.
Some fanfictions might focus on the relationship between the three of them. It could be a story where Percy, Luke, and Thalia are stranded in a strange place. They have to rely on each other to survive. During this time, they start to understand each other better. Percy learns more about Luke's past that made him turn bad in the first place, and Thalia tries to be the mediator between them, leading to a more complex and interesting dynamic.
There's a fanfic called 'Among the Gods with Percy, Annabeth, and Thalia'. It takes them on a journey through the different realms of the gods. The character interactions are really interesting, especially how they rely on each other's strengths. For example, Annabeth's knowledge of mythology helps them navigate tricky situations, while Percy's combat skills and Thalia's ability to lead keep them safe.
A really engaging storyline could be them being transported to a different era in the world of Greek mythology. They would have to adapt to the different rules and powers that exist in that time while still relying on their own abilities. This would put their friendship and skills to the test in a whole new and exciting way.
Luke might become more enraged. Since Percy has thwarted his plan to do something to Annabeth, he could seek revenge. He might start plotting more devious schemes against Percy and Annabeth, or even their friends.
A good one is 'Percy's Unusual Romances'. It focuses on how both Annabeth and Thalia's love for Percy is different yet strong. It shows their individual ways of expressing affection and how Percy reacts to it all.
In this kind of fanfiction, they might have an adventure together. Maybe they'll face a new monster that they haven't encountered before. For example, a mythical creature from a less - known part of Greek mythology.
One great 'Percy, Annabeth, and Luke' fanfiction is 'The Bonds of Prophecy'. It delves deep into their complex relationships. Percy's loyalty, Annabeth's intelligence, and Luke's inner turmoil are all explored in a really engaging way. The story also has some great action scenes that keep you on the edge of your seat.