Metamorphosis is a story of an irreversible change seen through the eyes of one of Catalunias many invisible citizens: Laia. From her individual experiences, we will follow the process of Barcelona In Common from the public presentation as Guanyem Barcelona in June 2014, to the victory in the municipal elections of May 2015 that lead Ada Colau to be the first female mayor of Barcelona. This documentary wants to portray the will of this group of citizens to articulate a space of confluence of social movements, neighborhood and political actors, aiming to the conquest of municipal power.