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.。小魏和小蛙是两个名不见经传的私家侦探。二人虽然都具备一定的推理能力,但破案的关键往往是依靠两人一些脑洞大开的方式。神经质是他们的特点,抓马是他们的灵魂。他们用自己奇特的破案方式侦破了一个又一个案件,在逐渐成名的过程中,也更加坚定了二人的兄弟情深。。