The first time you arrive on Mythology, you have to go left and into the Museum of Olympus. After you have watched the mini animator and his two brothers, please go right and climb up the stairs and snatch the starfish off of face of Poseidon. Then, run outside and go left to the Tree of Immortality.
The next thing that you have to do is to go past the giggling statue and up the stairs. Then, you have to click “go Up”. This one is the complicated maze. Basically, you can just jump up onto the snake and he will bounce you up. Then, you have to make your way left. Please jump on the mushrooms in order to get to the higher platform and climb onto the snake hanging from the tree. Then, you have to drop off at the second platform and go right. Please make sure to jump over the gap. You are searching for a guy dressed in the brown and with a reed pipe in his hands and he will be under a huge and glowing apple in the top right of the scene.
Once you found the guy with that specific things, please talk to him and he will agree to help you reach the apple if you help him his missing jars of honey. For some people, ten jars may sound too much but it is right. Do not freak out when the guy tells you that you only have 60 seconds which means 6 seconds for each jar. It is more than enough. Actually, there are more than ten jars in the area so that makes it much simpler. When you are done, you have to talk to the guy again and he will show you the secret path. At first, the path may be a bit hard. In fact, it is just a little left where you are now. Please follow it and click on the area above it. You will be able to make the apple drop. In this case, you have to come down and collect the apple. Apparently, the man will disappear and you will see Zeus.
Zeus will not be pleased with you and your action, this one will promise you immortality if you are able to find all the five sacred items. So, please collect the scroll he leaves behind. There are some of the items that need to be found. Some of them are a flower from the Garden of the Sphinx, teh golden ring of the Minotaur, the scale from Hydra, the giant pearl from the kingdom of Poseidon, and the whisker from Cerebus (the name of the guardian of the Underworld).
You have to exit the tree area and you will be able to see the old lady turn into Athena. If you are not familiar, she is the daughter of Zeus. She will warn you about him. As you cannot get Hercules to help yet, you should find the sacred items.