Junior high school students Shuichi Toriga and his friends Keita are interested in aliens and UFO's. Shuichi notices that Manami Tarai, his sweetheart, has the strange ability to attract UFOs - she's the perfect girlfriend! Manami receives a Vivilian - a strange and mysterious gadget - from a close encounter with a UFO. With their open hearts and minds, they investigate the mysterious surrounding these otherworldly visitations!