The Emerald arc (Japanese: エメラルド編Emerald arc), also referred to as The Sixth Chapter (Japanese: 第六章The Sixth Chapter), is the sixth story arc of the Pokémon Adventuresmanga, consisting of four volumes. It began serialization in February 2005, and ended in October 2008.
The arc begins with focus on a Trainer named Emerald, who is sent by Professor Oak and Crystal to catchJirachi within seven days. On arrival at the Battle Frontier, he ends up interfering in the opening ceremonies and gains the second challenge of clearing the seven battle facilities by defeating the Frontier Brains within that time. During this time, Emerald befriends Todd Snap and discovers that the armored villain Guile Hideout is seeking Jirachi for his own evil purposes.
Emerald arrives at the Battle Frontier and crashes the opening ceremony, after which the Frontier Brains challenge him to defeat all seven facilities in seven days.
Latias and Latios are revealed to be helping Emerald.
Emerald reveals that his task is to capture Jirachi.
When this arc was being published in the magazines, it was known as the Battle Frontier arc (Japanese: バトルフロンティア編Battle Frontier chapter). At the time, this arc was the only arc of Pokémon Adventures not named after a game.
