A third plotline could be the characters forming new relationships in high school. They could meet other students who are also secretly part of the superhero world or just normal friends. These new relationships can change the dynamics within the young justice group and also lead to personal growth for the characters.
One possible plotline could be Percy struggling to fit in at high school while also hiding his demigod powers. Maybe he accidentally uses his powers in front of his classmates during a sports event and has to come up with a creative excuse.
Perhaps there's a plotline where a new member joins the team during this 'in - heat' situation. They have to quickly adapt to the intense conditions and the team dynamics. The new member might have a power related to heat, like the ability to manipulate fire, but they first need to learn how to control it properly within the context of the team and the ongoing heat - related challenges.
A cool plotline might be Starfire's origin story in the context of Young Justice fanfiction. How she ended up on Earth and her journey before joining the team. It could involve her past relationships on her home planet and how they influence her actions on Earth. Also, a plot where she discovers a new power within herself while training with the Young Justice group, which then becomes crucial in a big battle against a supervillain.
Obviously, the main characters from Young Justice like Robin, Aqualad, and Kid Flash would be there. They are the core of the group and their personalities would create a lot of interesting situations in high school.
Maybe in the fanfiction, Robin is misplaced in time rather than space. He could end up in the past, having to interact with younger versions of his teammates or even their predecessors, and has to use his wits to not disrupt the timeline while also finding his way back. This would involve a lot of character development as he sees his friends in a new light.
One interesting plotline could be the daughter's struggle to break free from her father's shadow. She might try to use her skills for good while everyone expects her to be like Deathstroke. For example, she could join the Young Justice team secretly and help them on missions, all while hiding her identity.
A great plotline could involve Superboy and Superman teaming up against a powerful new villain that neither could defeat alone. They would have to learn to work together and trust each other fully. This would show their different fighting styles and how they complement each other. For example, Superman's experience and calmness in battle could balance out Superboy's more impulsive nature.
One interesting plotline could be Robin trying to prove himself to Batman in a more complex and dangerous mission within the fanfiction world. Maybe there's a new villain in Gotham that only Robin can stop, but Batman is hesitant to let him take the lead at first.
One interesting plotline could be them having to deal with a new and powerful villain that specifically targets their relationship. For example, a villain who tries to turn them against each other by manipulating their past traumas. Another plotline might be them training a new group of young heroes in Young Justice together. It would show their different teaching styles and how they complement each other.
Another plotline might focus on the relationships within the team. For example, how two members who initially didn't get along start to understand each other better during a mission. This could involve them sharing their backstories and finding common ground.