In some fanfictions, Robin might look up to Superman as a role model and Superman could take him under his wing for a special mission. This could involve Robin learning new powers or skills from Superman, and it could also be a chance for them to bond on a deeper level. For example, Superman could teach Robin how to better control his fear in dangerous situations, which is something Robin struggles with sometimes in the Young Justice series.
Another plotline could be a time - travel scenario where Robin from the past meets an older Superman from the future. They have to work together to fix a disruption in the timeline that threatens both their worlds. This would give an opportunity for the characters to see how they've changed over time and also for some interesting interactions between the two different versions of themselves.
One interesting plotline could be Robin and Superman teaming up to solve a mystery that involves both Gotham and Metropolis. Maybe a new villain is using technology from Gotham to target Metropolis and only their combined skills can stop it.
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.
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.
A plotline could involve Black Canary having to protect Robin when he's in a vulnerable state. Maybe Robin gets injured during a mission and Black Canary takes it upon herself to keep him safe while also trying to figure out who targeted him. This would explore their dynamic as she has to be both a protector and a detective of sorts, and Robin has to learn to trust her completely in this situation.
Some side characters in these fanfictions can also be really well - written. For example, the other members of the Young Justice team when they interact with Robin and Superman. Their reactions and relationships can add depth to the story. Like when they are jealous of Robin getting special attention from Superman or when they all work together in a big battle and show their different strengths and weaknesses.
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.
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.
Another fascinating plotline is when an ancient evil from Ben's world crosses over into the Young Justice universe. This forces both Ben and the Young Justice team to put aside their differences and combine their skills and powers to defeat this new threat. It usually involves a lot of research into both universes' mythologies, and the story can show how the two groups learn from each other and grow together as they face this powerful enemy.
Maybe there's a plot where they have to go undercover as a couple. As they pretend to be in love for the mission, they start to actually develop feelings for each other. The kiss could be a turning point where they admit their real emotions to themselves. For example, they might be infiltrating a villain's lair where only couples are allowed in, and during this time, their relationship deepens.
One common plotline is Damian trying to prove himself to the Young Justice team. Since he's used to being in the shadow of Batman, he wants to show that he's a great hero in his own right within the team. Another is his rivalry with other members, like if there's another character vying for the leadership position or just having a different approach to crime - fighting.