How do you start the quest on mythology island?

There are only three places to go when you enter Mythology Island :

• The Museum of Olympus on Main Street : read about the 14 gods depicted there, and get the starfish from Poseidon's statue
• The Temple of Muses : to the right in the Grove of temples -- get the reed pipe and learn a song from the statue of Euterpe, muse of music
• The Tree of Immortality : climb the tree to get the Golden Apple and begin the actual quest on the island -- recovering the 5 sacred items for Zeus