Mystic of Dragon Ball Online
For Big Kamehameha Quest you need to have Goku Doll.
You need to use NPC Traveler to get to City in Jungle.
He is on right side of City Center Temple.
Now you need to get to the Stone Stairways.(screen)
Goku Doll must be placed in right place.(screen)
Now you need to beat monsters to get to the chest.