This research takes a serial drama entitled Orkes Madun (OM-I-Iwritten by Arifin C Noer which consist of four plays as its corpus. They are: i Madekur dan Tarkeni atawa Orkes Madun Bagian Satu (OM-1, 1973); ii Orkes Madun 2A/Umang-Umang (OM-II,1976); iii Orkes Madun IIB atawa Sandek Penurda Pekerja (OM-III, 1979); and iv Ozone atawa Orkes Madun IV (OM-IV, 1989). There are two main aspects of text, they are dramatic text and performance text. There are four important elements in every structure of the dramatic text, namely dramatic shape, character, dialogue, and stage directions (Aston, 1991). The aim of this research is : to find out the characteristic of the dramatic text structure, especially its character element and characterization, as well as its plot of OM-I-IV; to reveal the theme and its message of OM-I-IV; andto unravel the thread which unites those four plays or a single long play (OMI-IV).This research is a qualitative research using a structural and semiotic approach. There are three steps to reach the goal. First, analyzing textually the structure of the dramatic text OMJ-IV, especially the characteristic of its characters and plot. Second, a$alyzing semiotically the sign-system of the character and plot, especially to reveal the meaning of the message as well as its characters. Third, analyzing by using the intertextual approach to find out the difference and the likeness of those four plays, and also to unravel the thread which unites them. The conclusion as the outcome of this research can be drawn as follows: 1.1 The dramatic text of OM-I-IV can be classified as a radical dramatic text, tragicomedy drama, drama of idea, or symbolical drama. 1.2 WASKA (WK) as the central character, is able to develop a dramatic plot, so that, he can play the role as the thread which unites those four plays in MI--I-IV.;