Kei and Yuri travel with fellow trouble consultant and hacker guy Touma to World's World, a retro theme park that emulates Japanese society in the 1990's. Their mission is to guard Touma while he deals with some system issues involving a computer virus.

Yuri and Kei are given accommodations at an all-girls boarding school from the 20th century. Yuri finds the life as an exchange student a lot of fun. Kei could care less, until she learns about some ghost stories about the school and experiences some of the horror.

The rain catches Yuri and Touma in the city and they end up at a flower shop where Touma falls in love with a girl who works there. Kei and Yuri pick up on the computer geek's change in mood, and readily give him love advice on the scary thought of asking the girl out.

The 3WA have been tracking a criminal boss but he hardly ever appears except to the winners of a worldwide beach volleyball tournament. Kei and Yuri are assigned to compete and win the tournament, but must undergo extremely rigorous training by one of the 3WA's crazy coaches.