Akari-chan is a cheerful high school girl who loves naughty things. One day, when her private tutor comes to visit, she immediately seduces him, forgetting about her studies. Akari-chan's cute and cunning invitation makes the teacher unable to resist and he gets a full erection! Now he and his student are in trouble as they develop into a naughty relationship! It turns out that this was a cleverly set trap! "I've filmed everything you do to me," the teacher says in a panic, kneeling down and begging for forgiveness, but it's too late! Akari-chan ends up keeping him as an obedient dog who will do whatever she says...