This thesis is talking about the making of "Missed", a documentary with two sections. The first section is: "Film - recording and presenting in a traditional way ", and the second section is: "CD - obsessed with a medium which might be disappearing". The documentary began at the emotional connection between human being and objects, and people’s behavioral habits of collecting comsumables. The documentary tried to record films and CDs - the two daily medium that might be disappear in the near future - to discuss the feeling of people who are obsessed with them.Via the production of this film, the author reconsidered different possibilities of documentary making, and introspected her own thoughts about film making.