It is another day. Roto tries to log on but his card is expired. Each card is good for 1 year and it expires on the person's birthday. Roto goes to an Internet service store where he can renew his membership. The process is tedious. First you have to strip naked, and your whole body gets scanned. There, Roto finds an ID card with the name Yureka (a female) on it. Roto logs on with the Yureka card. You're not supposed to log on with another ID, but he logs on anyway. His outward appearance is that of a female, but he is still Roto on the inside. Roto suspects it is a hacker's ID. But the adventurous Roto decides to explore the net as this new, mysterious character, Yureka. Roto runs into his friends, Boromid and Ah-dol but they do not recognize him. However, they accept Yureka. The group goes to Terror Tower to hunt monsters. Roto, disguised inside Yureka's body, finds out that Boromid and Ah-dol have been secretly honing their skills because they realized that Roto is so much more advanced than they are. While Roto is battling, he hears the voice of Yureka in his mind. Roto is able to defeat the monsters with Yureka's help. There are multiple levels in Terror Tower.
The group encounter another master level player, Basara (a man) who is extraordinarily skilled. Roto logs off. He is even more curious. Who is Yureka? Later when Roto logs on with his own ID, he encounters Yureka. He wants to find out who she is. He asks, "Who are you?" Yureka mysteriously replies, "I'm Yureka. You created me." Roto is perplexed.