I'm sorry, I haven't read the 'Wolverines Vol 1 20' specifically. But generally, Wolverine stories often involve his adventures, his battles against villains, and his complex relationships with other characters in the X - Men universe.
As I haven't read 'Wolverines Vol 1 20', I can't give you a detailed plot. However, in the Wolverine universe, his stories are full of drama. There could be a mystery he needs to solve, perhaps related to a new mutant power or a threat to his friends. His past might also be a factor, with old enemies resurfacing or secrets from his time in various organizations coming to light. It's also possible that his relationship with other mutants, whether it's friendship or rivalry, is central to the story.
The story in Guardians of the Galaxy Vol 3 is complex. It mainly focuses on Rocket's past. His origin is explored, and we see the cruel experiments he endured. The Guardians set out to save him from his creators. Along the way, they face many challenges and new enemies. They also have some internal struggles within the group. In the end, they manage to rescue Rocket and also find a new path for themselves.
Well, in a fanfic where an OC has Wolverine's powers against the Joker, it could start with the OC being in Gotham. The city's dark and gritty nature would contrast with the OC's more animal - like and straightforward power set. The Joker would likely try to use the OC's short temper (a trait Wolverine sometimes shows) against them. Maybe he'd set up situations that would make the OC lash out and cause destruction, which would then turn the city against the OC, putting them in a tough spot.
The main plot points include Rocket's origin. The High Evolutionary's experiments on him are a big part. Then there's the Guardians' mission to save Rocket. Also, Star - Lord's relationship with Gamora is still a factor in the story.
The OC would probably be initially enraged by the Joker's antics. Wolverine - like powers mean a short fuse sometimes, and the Joker's chaotic behavior would surely set that off. But as the story progresses, the OC would have to learn to control their temper to effectively deal with the Joker.