Martin (Javier Peter Javier De Pietro), a 16-year-old boy, decides to chase down his middle-aged swimming teacher Sebastian (Carlos Echeverria Carlos Echevar í a). Martin, who is quiet and shy in appearance, has an innocent face and a youthful figure. He approached with all kinds of lies, toying with the coach who already had a girlfriend. Two people spend the night together, during which it is difficult to sleep, inadvertently naked and flirtatious, floating with inexplicable lust. When the boy was absent from school by accident, the swimming coach suddenly felt the weight of missing. "absence" won the best teddy bear award at the 2011 Berlin Film Festival. The whole film uses a simple situation supplemented by the complex ambiguity of teachers and students to delicately show the delicate relationship between the active and passive desire. From the students' peeping chase in the first half to the teacher's myriad ideas in the second half, it shows the extraordinary scene scheduling ability of young director Mark Berger.