In the small town of Linha Cristal, the community gets together to have a sewerage system built and the creek’s smell problem solved. Marina, the movement leader, learns that this year the City Hall has funds only for the making of a fiction short video. Then, she and her husband, Joaquim, decide to shoot a story about a monster that emerges in the middle of the sanitation construction works. Marina writes a script, Joaquim sews a costume, Silene accepts to be an actress, Fabrício has a camera. Gradually, the filmmaking will involve all the local inhabitants.