Mona Kawai may be on the brink of a breakthrough. Out at the amusement park on a day trip planned to welcome her friend Tomo to Tokyo, she gets separated from the group and falls prey to some wannabe pickup artists who won't take no for an answer. But just as things start to get dicey, a certain someone steps in to save the day and sends Mona's heart on a ride so breathtaking, even she has to admit there's something seriously strange at work-something that might make her picture-perfect mask start to slip...