The plot involves various characters boarding the Infinity Train. They have to face their inner demons, solve puzzles, and deal with the odd inhabitants of the train cars. The graphic novel explores themes like self - discovery and personal growth as the characters journey through the train's seemingly infinite expanse.
One interesting Infinity Train fanfiction could be about a character who discovers a hidden car on the train with a whole new set of rules. Another might be a story where two characters from different cars team up to overcome a common enemy on the train. There could also be a fanfiction that focuses on the backstory of one of the train's denizens and how they came to be there.
You can start by looking on fanfiction platforms like Archive of Our Own (AO3). It has a large collection of Infinity Train fanfiction with different themes and ratings. Another place could be FanFiction.net, although the selection there might be a bit more limited compared to AO3. There are also some Infinity Train - focused forums where fans might share their own written stories or recommend good ones.
The Infinity War in the comic book is a huge and complex story. It involves many superheroes and villains fighting over the powerful Infinity Stones. Thanos is a central figure, aiming to collect all the stones to gain ultimate power. It has epic battles and many twists and turns in the plot.