Fanfic about Alex Karev and his daughter: What are some interesting plot ideas?

The fanfic could be about Alex Karev finding out that he has a long - lost daughter who is now a baby girl. He has to navigate through his past mistakes and current life situation to be a part of her life. He might struggle with his own insecurities as a father, but with the help of his friends and the love for his daughter, he tries to create a stable and loving environment for her.

He could interact with the baby girl in a very gentle and protective way. Maybe he rocks her to sleep when she's crying, or makes silly faces to make her laugh.

One plot idea could be that Brittany and Alex are in a small town and they discover a hidden treasure map. They then embark on an adventure together, facing various challenges and growing closer as they search for the treasure. Along the way, they might have to outwit some local villains who also want the treasure.

A plot where Alex and Sara are stranded on a deserted planet together. They have to rely on each other's skills to survive. Sara's combat and survival skills from her time as a pirate, and Alex's scientific knowledge could make for an exciting story of cooperation and friendship. It could also explore a possible romantic relationship between them as they grow closer during their time of isolation.

One possible plot could be the challenges they face as new parents. Maybe dealing with sleepless nights and the stress of taking care of a baby while also trying to balance their careers in the medical field.

A possible plot is that the daughter is sent on a quest to find a lost artifact that is crucial for the balance of the ocean. Along the way, she discovers secrets about her family's past that her father has been hiding from her. This could lead to some tension between them, but also help her grow as a character. She could also face challenges from other Atlantean factions who don't believe she is worthy of this task because she is still young and inexperienced.

Another concept could be that Alex is an amnesiac who has a connection to one of Batman's old foes. Batman tries to help Alex regain his memories while also protecting him from the bad guys who are after Alex because of his potential knowledge.

One idea could be to explore what would happen if Alex Rider had to team up with a former enemy. Maybe they discover they have a common foe and must put aside their differences.

The relationship could be developed through a shared hobby. For example, if they both love music, they could bond over going to concerts or learning to play an instrument together.

A really interesting plot could involve her exploring a new part of the ocean that has been hidden for centuries. In this journey, she might encounter new sea deities that Poseidon has never mentioned. She could also find herself in a conflict between two groups of sea - creatures, and she has to use her wits and powers to bring peace. Along the way, she could learn more about her father's past and secrets that he has been keeping from her, which could change her relationship with him and her view of herself as a demigod.