A possible plot could be set in an alternate universe. Leonard and Sara are living a relatively normal life when she gets pregnant. But then, elements from their original 'universe' start to seep in. Enemies they thought they left behind start to target them because of the baby. They then have to use their skills and the help of some new friends they made in this alternate world to protect their family - to - be. It's a story of love, danger, and new beginnings all rolled into one.
One idea could be a time - travel related pregnancy. Maybe they get stuck in a time anomaly where Sara discovers she's pregnant, and Leonard has to figure out how to get them back to their own time while protecting her and the unborn child. It could involve some emotional moments as they both come to terms with this unexpected situation.
Love and redemption are also quite common. Maybe Snart, who has a more morally ambiguous past, finds a kind of redemption through his relationship with Sara. And of course, there's the theme of trust. Since they both operate in a world where trust is hard - earned, fanfics might focus on how they build that trust with each other. There could be stories where they start off as reluctant allies and gradually become more than that.
One common theme is their partnership. They often team up in fanfics, whether it's for a heist or to fight against a greater evil. Their different skillsets - Sara's combat abilities and Snart's cunning - make for an interesting dynamic.
One idea could be that they have to protect their baby from a time - traveling villain who is after the baby's special powers. Another could be that they raise the baby in a world where they are trying to balance their former criminal and vigilante lives.
You can start by looking on fanfiction.net. It has a large collection of fanfics for various fandoms, including those related to Leonard Snart and Sara Lance. Another option is Archive of Our Own (AO3), which is known for its wide range of fan - created works and has a great tagging system to help you find exactly what you're looking for.
Rather than specifically seeking lemon fanfics (which are not in line with most ethical and community guidelines), you could look for fanfics that explore the relationship between Sara Lance and Leonard Snart in a more platonic or action - oriented way. For example, some fanfics might focus on how they team up to face a common enemy, or how they come to respect each other's skills. Check out well - known fanfic communities and look for fics with high reader reviews in this regard.
Sara's tough and protective nature would make her a fierce defender of the baby. Leonard's cunning would help in outsmarting any threats to the baby.
One possible plot could be that they discover the pregnancy unexpectedly. Maybe they were on a mission and Sara starts to feel unwell. They initially think it's something related to a recent encounter with a strange alien or time - traveling anomaly. Rip is both excited and terrified as he realizes the responsibilities that come with having a child in their dangerous line of work. Sara, on the other hand, is more practical and starts making plans for their safety and how to continue their heroic deeds while pregnant.
One possible plot could be that they discover the pregnancy during a mission. They then have to keep it a secret from their enemies while also preparing for the new life. Oliver might be overprotective, and Sara could be struggling with how motherhood will change her life as a warrior.
The plot of a Rip and Sara pregnant fanfic could be really complex. It might start with a bit of mystery, like Sara not being sure who the father is (even if it's Rip in the end). As the story progresses, they have to deal with the reactions of their friends and allies. Some might be supportive, while others might be concerned about how a baby will change their dynamic. There could be medical complications during the pregnancy that add to the drama. And at the end, it could be a story of love and family, with Rip and Sara welcoming their new baby into a world full of both challenges and joys.