The Nohara family could have enjoyed a luxurious barbecue dinner, but the arrival of an unexpected guest brought them a nightmare. Because the "sweet boy" was suspected of collecting their secret weapons, he was finally wanted by the whole country and fell into an endless escape. Friends, neighbors, teachers and cadres of Sweet Boy can be seen everywhere. For the sake of love and justice, as well as the worse barbecue dinner, the family had to get rid of the pursuit from all directions and embark on the road of killing the headquarters of Sweet Boy.