One possible plot could be that Tasha discovers she's pregnant and the family has to adjust. The bionic kids could be super protective, like Chase trying to create special safety protocols around the house. Leo might be excited to be a big brother and start preparing the nursery with his unique, comical ideas.
A great plot could involve Tasha's pregnancy being a catalyst for the family to bond more deeply. The family could face some challenges like financial concerns for the upcoming baby. Meanwhile, the bionic teens could use their abilities in unexpected ways to help out, such as Bree using her super speed to run errands quickly for Tasha during her difficult pregnancy days.
Obviously, Tasha would be a main character as she is the one who is pregnant. Donald could also be a main character as he is her husband and would be involved in the pregnancy journey. The bionic kids, like Chase, Bree, and Leo, would also be important main characters as they are part of the family and their reactions and actions would play a big role in the story.
One common theme is family. Since Tasha is part of the family in Lab Rats, fanfictions often explore her role within the family unit. Another theme could be adventure. Tasha might get caught up in the bionic teens' adventures and how she copes with the high - stakes situations.
One popular Lab Rats Tasha fanfiction might be 'Tasha's New Adventure'. It could explore Tasha getting involved in some of the bionic heroes' missions in a unique way. Another could be 'Tasha's Hidden Talents' where her character is developed further to show skills we haven't seen in the original series.
One interesting plot idea could be Donald and Tasha teaming up to solve a mystery within the lab. Maybe some of the bionic technology is going missing and they suspect an inside job. Another could be a story where Tasha helps Donald deal with his insecurities regarding his role in the lab. For example, he might feel that he's not as important as the bionic kids and Tasha could show him how valuable he really is.
For Donald, his character could be developed by showing his more emotional side. Usually, he's seen as the scientific, no - nonsense type. But fanfiction could explore his fears, his dreams for the future of the bionic program, and his relationships outside of work. For Tasha, her motherly side could be delved into deeper. Maybe she has some backstory about her own family that influences how she treats the bionic kids.
The plot might involve a scientist who has worked on both the bionic enhancements for the Lab Rats and has some connection to an experiment related to the Avengers. This causes a rift in space - time that brings the two groups together. The Lab Rats could learn a lot from the Avengers about teamwork on a grander scale, and the Avengers could be impressed by the unique bionic abilities of the Lab Rats.
It could be about the Lab Rats getting trapped in a high - speed situation, like being in a malfunctioning super - speed device. Maybe they have to find a way to break free while also dealing with the side effects of the speed trap.
One possible plot could be that Kagome somehow gets transported into the Lab Rats' world. Maybe she mistakes their high - tech lair for a strange youkai (demon) lair at first. The bionic heroes could be initially suspicious of her, but then realize she has her own kind of 'powers' in the form of her spiritual abilities and her sacred arrows. Together, they could team up to fight a common enemy, perhaps an evil scientist who wants to use both Kagome's spiritual energy and the bionic technology for his own malicious purposes.
One possibility could be that Marcus kidnaps Leo to use him as a bargaining chip against the Lab Rats. Maybe he wants access to the bionic technology they possess. Marcus might think that by having Leo, he can force the others to give up their secrets or help him gain more power.
One possible plot could be that Chase discovers a new, hidden aspect of the bionic technology they have. Maybe he accidentally activates a dormant superpower gene within his bionic system during a mission. This new power could be something like telekinesis or the ability to manipulate energy. It would then lead to him having to train to control it while also dealing with the envy or concern of his siblings in the Lab Rats team.