Pokémon Diamond and Pearl/Hearthome City

'''Hearthome City is not only the home to Sinnoh's Contest Hall, but features Amity Square, a park where you can walk your cute Pokémon. It also has a Ghost type gym led by Fantina'''

Disturbance at the entrance
Upon entering Hearthome City, a will come running towards you. Stall it long enough for its trainer, Keira, to get it back in its Poké Ball, and she will ask you to come to the Contest Hall so she can thank you properly.

If you are having trouble finding the Contest Hall, speak to the person in front of the Pokémon Fan Club. He will escort you to the Contest Hall.

At the Contest Hall entrance you will bump into Fantina who boasts about being a contest fanatic and says you arent ready to challenge her gym yet. Inside the hall, you will run into Keira, along with your mom. Keira thinks you must be a contest star since you are Johannas kid. To get you started, your mom will give you a dress or tuxedo, and Keira will give you a fashion accessory, the Glitter Powder. You will also receive a Mild Poffin from a man near the right counter inside after yoh obtain the Poffin Case from the Fan Club chairman.

PC storage admin
The woman found in the house beside the Pokémon Center is Bebe. Like Lanette and Bill of the previous Pokémon games, she is the storage system administrator. Return to her after you beat the game and have received the National Dex and she'll give you an.

In Platinum, Bebe will provide you an Eevee whenever you decide to first talk to her.

Pokémon Fan Club
In the building to the right of the Poké Mart is the Pokémon Fan Club. Speak to the Fan Club's chairman and he will give you a Poffin Case. A lady in the fan club will check how much your lead Pokémon likes you, and a Jubilife TV reporter will interview you here.

Other points of interest
On the second floor of the second house to the right of the Poké Mart, you will find a woman who will give you the Shell Bell.

The house to the left of the Poké Mart is the Poffin House. With your Poffin Case in hand, enter and bake to your heart's desire.

Another rival battle
When you head south of the Pokémon Fan Club you will encounter Barry again. When the battle is done he'll tell you he is headed to Veilstone for the next gym.


 * +If you chose Turtwig:


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 * +If you chose Piplup:


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 * +If you chose Chimchar:


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Mystery surprise
Talk to the man near the southeast gate to receive an egg containing a !

In Platinum, he will not give you an egg. He'll just ramble on about Professor Elm.

Relic badge DP
You may only battle Fantina after talking to her at the Contest Hall and then talking to Cynthia's grandma in Celestic Town and getting HM03, Surf.

The Hearthome Gym features a series of question that you must answer to move on. On each floor is a sign bearing the question and three doors that are labeled with answers to those questions. If you move through the gym getting all questions right, you won't have to face any trainers on your way to challenge the leader, Fantina. The answers to the questions in order are: 15, 40, 39, and 15.

Trainers

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Gym leader battle

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After beating Fantina you can now use Surf outside of battle

Relic badge Platinum
In Platinum, you can find Fantina in the Contest Hall lobby. After talking to you, she'll run off to wait for you in the gym where you can battle her.

In Platinum, the Hearthome Gym is a little different. You'll navigate a pitch-black labyrinth with a flashlight, looking for the singular blue tile in a given room. Each blue tile will have a symbol on it. At the end of each room is a series of doors with red tiles in front of it. Go through the door whose red tile has the same symbol as the blue tile you saw earlier to proceed. The trainers in this gym have flashlights too, but you only battle them when they catch you in their flashlight, or you catch them in yours. It is possible to fight Fantina here, but be warned: you might find yourself unprepared to face her this early in the game. But, defeating her is possible, and necessary to continue the Platinum storyline. Beat her to obtain your third gym badge.

Fantina carries all Ghost-type Pokémon, so if you have a strong Dark-type move, you can easily breeze your way through Fantina.