Minecraft if its target audience was Mexico.
You basically follow quests, building blueprints, until you fight the big bad of the chapters in which there are 4.
Then you can complete a few optional building/quest challenges after completing each chapter.
And then finally there's a creative island that you unlock building parts for as you complete all the challenges in the game's chapters, so your mileage may vary depending on how much screwing around you do.
No missables unless you go out of your way to discard important items. Just keep everything in your colossal coffer.

Underrated Game. I played to completion on the PS Vita and this was my favorite game on it. There are some QOL improvements that I enjoy in this PC Port. Villagers are still a bit wonky, but a great game and port if looking for a replay or if you are new to the game. I recommend playing this one first (if you want to play both) as you may miss some of the stuff from the sequel though neither are directly connected.

This game has it's own charm and hoping for a DQB3.

Nostalgia! Fav game on psvita.