This is a role playing game with a story of treasure hunting. The main character is a descendant of the legendary Brave-man. However his mom and he are quite poor and has debts. So he decided to find the treasure that his ancestor hid somewhere.
Only introduction section is free.
If you want to play whole story, you need to pay $0.99 with In App Purchases.
However, there is no hurry to pay. A message will appear on map if you get the state to need purchase.