A noise is coming from the floor upstairs. Eunsu, hears this for over a month which causes uncontrollable anger to rise up. She gets eliminated again from a competition she had prepared for a long time. Eunsu decides to write her last piece with the theme of the noise between the floors and persuades her friend to help her follow and track the secret.。小头爸爸支持大头儿子收养流浪狗兜兜,呵护了孩子的爱心;小头爸爸陪同大头儿子一起照顾小狗,让大头儿子明白爱心不能是心血来潮,需要更多的耐心和责任感;后续发生的 一连串事件,也让大头儿子和小头爸爸进一步懂得了真诚与信任的重要性。。