If you have any fast moving sky lander(preferably Wrecking Ball)go down to the beach and near the steps of the stairs you will see a little corner with barrels in it. Destroy the barrels and keep doing youre fast attack into the corner. This should take you a little bit but eventually you will be under sky lands. There you will find a tremendous amiunt of money, cannons and Flynn in a wierd "T" possicion.
Ok on the very first lvl of skylanders there is a cannon once you break the wall shoot it again and it will crush a house go to the house and theres a piggy bank and on the second lvl once you get past the second gate with the key keep on going straight with a life skylander then a bridge will open welcome!