Ambrette Town

In this town:

Pokemon Center

Ambrette Aquarium

fossil Lab

Hotel Ambrette

As you enter town, your Rival will meet up with you and tell you how to get to Cyllage Cit, but ask you to go to the fossil Lab first.

Go down the stairs and go up the path beside the Pokémon Center for a Heart Scale.

Enter the aquarium and go down the stairs to the left to obtain an Old Rod.

Back track and talk to the girl in front of the aquarium to obtain TM94 Rock Smash. Not too far from hear, head south and talk to a guy near the lamp post. He will trade a Dive Ball for a Poké Ball.

Enter the house to the left to see a lady that will ask for a Pokémon with a certain speed or higher. If you are able to show her what she asks for, she will give you an item. She will give a request daily so you can check back with her if you want more items.

Leave the house and head down the stairs again. In the lower left corner of the cliff, pick up the hidden X Attacl. Enter the building to the right, Hotel Ambrette. Talk to the lady in front of the bookshelves to the right for TM96 Nature Power.

Go up the stairs to the left and head for the last room to the right to see Mr. Bonding. He will give you the Sp. Def Power Lv. 1.

Leave the building and sit on the bench if you want a nice view of the cliff. Otherwise, head for the fossil lab to the east.

Enter the lab and your rival will catch up to you. The researchers there will tell you about fossils. They do not know anything about Mega Evolution themselves but they will refer you to someone who might know it. The assistant you will be looking for is in the Glittering Cave.

Leave the lab and enter the gate to the left. Talk to the girl near the east exit to obtain a Rocky Helmet. Exit to Route 9 to head to the Glittering Cave.