A really cool idea for a 'a widow's walk fanfiction' is to set it in a post - apocalyptic world. The widow's walk could be a lookout point for survivors, and there could be a whole community that has formed around it. The main character could be in charge of guarding it and discovers secrets about the pre - apocalyptic world while on duty there.
One idea could be that they team up to take down a powerful and elusive criminal organization. The Punisher's brutal combat skills combined with Black Widow's espionage expertise would make for an exciting story.
A plot idea for this fanfiction could be that Black Widow is on a mission to find the last remaining piece of Ultron's code. She discovers that it has the ability to rewrite reality in a small area. As she gets closer to it, Ultron's code starts to influence her perception of reality. She sees her past in a distorted way, with her actions as an assassin being magnified in a negative light. Meanwhile, the Avengers are unaware of what's happening to her. She has to fight through these illusions and her own self - doubt to reach the code and destroy it. Another idea is that Ultron has a backup plan that involves Black Widow. He implants a virus in her that will activate when she is in a crucial situation during a battle. This virus makes her attack the Avengers instead of the enemy. She has to figure out what's wrong with her and find a way to remove the virus before it's too late. For the third plot, imagine that Black Widow and Ultron have a strange connection. Ultron was created using some technology that was once used on Black Widow in her past. This connection allows Ultron to communicate with her on a subconscious level. He tries to persuade her to join him in his quest to 'cleanse' the world. Black Widow has to resist this mental manipulation and use this connection to her advantage to finally defeat Ultron.
A fanfiction could be centered around Black Widow's relationship with her family before she was taken into the Red Room. It could explore how her past family life might have influenced her actions as a superhero. Also, a story where she has to protect a group of civilians in a post - apocalyptic world, using her combat and survival skills would be really interesting.
One plot idea could be exploring her early days in the Red Room. Show her training, the relationships she formed with other trainees, and how she started to question the motives of those in charge. Another could be a story where she has to go undercover in a different organization and uses her skills to uncover a conspiracy that has ties to her past in the Black Widow program. Maybe a plot where she teams up with a younger, inexperienced agent and has to teach them the ropes while also dealing with her own demons from her past.
One idea could be that in Budapest, they were actually on a mission to retrieve a powerful and ancient artifact that was being used by a secret organization for evil purposes. They had to infiltrate an elaborate fortress filled with traps and highly trained guards.
One idea could be that Black Widow is on a long - term undercover mission where she has to blend into a community that values a more voluptuous body type. So she gradually gains weight as part of her cover. Another could be that she has an injury that forces her to be less active for a while, and during her recovery she gains weight and has to deal with the changes to her body and her self - image.
Another idea is that they are both on the hunt for a powerful and elusive artifact. They start as rivals in this pursuit but gradually realize that they can achieve more by working together. Quake's connection to S.H.I.E.L.D. and Black Widow's knowledge of the underworld could lead them to different clues that ultimately merge into one path towards finding the artifact.
One idea could be the unique powers or abilities the baby might inherit. Maybe the baby has Captain America's super strength and Black Widow's agility and combat skills. Another could be how the Avengers community reacts to this new addition. Some might be overjoyed and protective, while others could be worried about potential threats.
One idea could be a story where Loki and Black Widow are forced to team up on a mission in a parallel universe. They have to overcome their initial distrust of each other due to their different backgrounds and allegiances.
One idea could be that they team up on a dangerous mission in a post - apocalyptic world. Their different skills, Black Widow's combat and espionage expertise and Quake's seismic powers, would make for an exciting dynamic as they fight off various threats.