The Sasayama family seems to be living an ordinary life, but in fact they have a shocking secret that should not be discovered by others. Not only that, the mother Nozomi and her son Tatsuya are indulging in a relationship that goes beyond the line between parent and child... but also that the father, who should be aware of their relationship, is secretly peeking on them and taking secret photos for fun. Moreover, Nozomi realizes that she is being spied on, but instead of cutting off the relationship, it escalates even further...