It's a story related to the Star Wars universe that likely involves the Crimson Dawn organization. Solo's adventures probably intersect with this group in some way, perhaps in a heist or a battle for power within the criminal underworld of the Star Wars galaxy.
Well, 'Crimson Dawn Solo A Star Wars Story' could be about Solo's encounter with the Crimson Dawn. Maybe he gets involved with them while trying to make a name for himself in the galaxy. It could show his early days and how he had to deal with the complex politics and dangerous factions like Crimson Dawn. He might be on a mission that leads him to cross paths with this group, which could involve smuggling, espionage or other illegal activities that are common in the Star Wars underworld.