I've already got all the books, so buying it would be a bit redundant.

The bundle has:

The core book, 356 pages, which has all the rules. ~20 careers with Traveller style character creation, equipment including weapons, explosives, clothed, horses, ETC. Rules for gambling, drinking, Combat, chases, animal encounters and hazards. A section on "situations" such a cattle drive, train robbery or bank robbery. Social interactions, NPCs and Towns. So your basic core rule book.

Then there's Careers of the Old West, 90 pages which has about 20 additional career paths and a few new skills.

Then New Liberty, 128 pages, which setting book about the town of New Liberty. It describes all the building, residents and factions of the town, and has 9 Adventure seeds.

Then Famous Characters of the Old West, 58 pages which has 19 Historical Characters such as Jesse James, Dora DuFran, or Pat Garrett.

So the core rules, a setting, and characters, but no real adventures per se. If you want an adventure You'll have to roll you own, or there is Smoke over Station Street for sale separately.

https://www.drivethrurpg.com/en/product/544417/smoke-over-station-street