This game doesn't bore you with a long story, it sets up a very simple premise because the fun of the game comes from the gameplay not the story.
It's important to know this game only focuses on 2 areas, The Monster tower and your home town, your basic goal is to climb up the tower searching for monsters eggs that will hatch and aid you traverse the tower as you search for loot and story items. these monsters are referred to as
Familiars
The Tower floors and loot are randomly generated so everytime you go to a new floor you never know what you'll get. Also and this is super important, once you enter the tower YOU CANNOT exit it unless you have a
Wind Crystal or a similar item that warps you back to town, If you die on the tower you'll lose all your gear & items.
Without a warp item all your progress will be lost and they don't sell these items in your town, you have to find them in the tower.