Years ago, all of the ghosts in a haunted schoolhouse were banished by a certain student. Now, they're back—and they want revenge... Satsuki and Keiichirou Miyanoshita are two siblings recovering from the tragic loss of their mother. After moving to their mother's hometown, they learn that the local school they have transferred to is an old building—one said to be haunted. Despite initially brushing it off as a silly rumor, the two soon discover that ghosts are indeed real and that they're after them! Gakkou no Kaidan is the creepy tale of the lives of these siblings and their newfound friends as they try to survive the school's ghosts—with a little help from their pet cat along the way. Kids and ghosts. When young Satsuki finds an old book of spells from her passed away mother, she gains the power to fight ghosts that are haunting her new school. With the help of her friends, and of a really wicked devil cat, she must protect everyone around her or be haunted for ever more.