Six year-old Yuki Tachibana sees and hears things his classmates never do; the bizarre forms and whispering voices of the strange, supernatural creatures that secretly inhabit his elementary school. Despite the fact that this dubious gift has made him an outcast from his fellow students he seems quietly accepting of his place – that is until he finds the always-empty seat next to him occupied by transfer student Makoto Suzuki, whose attempts to befriend him coincide with the arrival of the ‘others’ – a second group of spirits vying for control of the cold, decaying school building.