A possible plot could be centered around a lemon grove that mysteriously appears in Capsule Corp. Bulma is intrigued and starts to explore it. Vegeta, thinking it might be a threat, also enters. Inside, they find that the lemon grove is a portal to another dimension. They are forced to enter the dimension together and face all sorts of strange creatures and challenges there. Their relationship is put to the test as they try to find their way back home, and along the way, they learn more about each other and themselves.
Well, it could be that Bulma discovers a lemon - shaped crystal that has some sort of power - enhancing properties. She wants Vegeta to test it out. Vegeta is initially skeptical but eventually agrees. However, the crystal has some side - effects that start to change Vegeta's personality a bit. Bulma then has to find a way to reverse the effects while also dealing with a new, more unpredictable Vegeta. This could lead to a lot of interesting character interactions and plot twists.
Perhaps in this fanfiction, there's a lemon - loving alien race in the DBZ world. Bulma, being the curious scientist, wants to study them, and Vegeta is dragged along. Along the way, they face challenges that force them to work together in new ways, and their relationship deepens as they navigate through this lemon - related encounter.
Well, it could be about Vegeta and Bulma facing some new and powerful black - themed threat. Maybe there's a new villain who has the power to burn things with black energy and they have to figure out how to stop it together. Vegeta might use his Saiyan strength and Bulma her intelligence.
In DBZ Vegeta and Bulma fanfiction, there can be alternate universes explored. Maybe in one universe, they meet under different circumstances. For instance, instead of Vegeta coming to Earth as an enemy, he could be an ally from the start. This would completely change the dynamics of their relationship. It could lead to a more romantic and less combative start to their relationship, and the fanfiction could explore how this different beginning affects their future together.
Another common plot is the 'time - travel' scenario. Given the time - travel elements in DBZ, some fanfictions might send Vegeta or Bulma back in time. This can lead to interesting situations where they have to interact with their younger selves or change certain events in the past. It also gives a chance to explore their relationship in a different timeline.
The story might center around a new threat to the Earth that only their combined efforts can defeat. Vegeta uses his fighting skills and Bulma uses her intelligence to create new gadgets or find weaknesses in the enemy. Along the way, they reaffirm their love for each other and strengthen their family unit.
Well, in a fanfiction, Bulma and Vegeta might have some really interesting interactions. Maybe they could go on a unique adventure together, facing challenges that test their relationship. For example, they could encounter a new enemy that forces them to rely on each other's strengths more than ever. Their different personalities, with Bulma's intelligence and Vegeta's pride and power, would create a lot of drama and tension in the story.
The fanfiction could focus on the challenges they face during the pregnancy. For example, Bulma might have some health scares that make Vegeta worry a great deal. He could struggle with his emotions, not knowing how to handle his fear of losing her or the baby. Also, there could be a sub - plot about how the news of Bulma's pregnancy affects the political situation in the Dragon Ball universe. Some enemies might see it as an opportunity to attack while some allies might offer more support than ever.
One possible plot could be that Vegeta kidnaps Bulma because he believes she has some technology that can help him gain an edge over his enemies. He takes her to a secret location and demands she work on it for him. Bulma, being the feisty and intelligent woman she is, tries to outwit Vegeta at every turn while also gradually getting to know a more vulnerable side of him that he doesn't usually show.
Well, it could be about them exploring a new planet during their honeymoon. Maybe they find some unique and beautiful landscapes, and Vegeta shows his softer side to Bulma as they enjoy the new environment together.
There's a possibility that it's a dark wizard - like being who has created this burning black energy as a weapon. He might have some vendetta against Bulma because of her scientific achievements that he sees as a threat to his magic - based power. And Vegeta gets in his way when he tries to harm Bulma, making them the main targets of this antagonist.