Golden Sun

Feel free to explore the Sewers, but it looks like a area we will need to come back later since there are locked gates. Exit the Sewers and spend some time talking to Kalay's residents. The guy near the grave stones will tell Isaac that the bridge to the north has been rebuilt, thats the same bridge that was broken when Hammet tried to cross it early on in the game. Exit Kalay and a little scene will start with a tour group heading to Colosso in Tolbi. After the scene head north to cross the newly built bridge and enter familar territory. Enter the town of Vault and go talk to the Mayor, he will explain the thieves have escaped and was worried about Ivan. Talk to the lady in the Inn for a dog bone and then go up to the upper area to find a dog near the grave stones. Give the dog the bone and it'll move up some, but nothing special will happen. Continue on to end up at a watch tower, climb the ladder up and ring the bell to make a Djinni come out. Too bad we can't reach the Djinni, so just walk back to the grave stones. We gave that dog a bone but got nothing in return, use the Reveal psynergy to find a hidden hole in the middle of the grave stones. Drop through to enter Vault Cave. Climb the ladder down to enter a hallway, the rightside will lead to the treasure chest that really is a mimic. Fight if you're in need of a Vial, otherwise continue on by going left.