Lyfa, a Sylph player, finds herself under attack by the player-hunting Salamanders, but is saved when a Spriggan named Kirito suddenly appears on the scene.
Although Kirito, who has brought along a private pixie named Yui, appears to have significant skills, he doesn't seem to know much about Alfheim Online (ALO).
Lyfa wonders at his lack of knowledge, but as a token of thanks for having rescued her, she proceeds to give him a lecture about the world of ALO (Alfheim), and takes him to the Sylph capital, Sylvain.