It has been three years since Noxus invaded Ionia. Backed by the powerful Dark Summoner, Noxus has repeatedly invaded neighboring countries. Since its invasion three years ago, the border of Ionia has been surrounded by a burning smell and the thunder of war all day long. Ionia is commanded by a young female commander named Irelia. She is a leader with extremely high combat effectiveness and military insight. The Ionia army commanded by her actually withstood the almost abnormal offensive of Noxus. This achievement was achieved despite such a huge disparity in strength. The people of Ionia gradually restored their morale under her leadership.