In Japan, three adults fall in love with Rinko, a high school girl in the video game Love Plus. This virtual romance leads them for a whole weekend to the old seaside town of Atami, where they cross paths with two teenagers who have come to spend their first weekend together in the same hotel. But Kentaro has also been seduced by Rinko. At first jealous, Kyoko ends up being interested in this virtual rival who seems to have contaminated the hearts of all the men in the country.