Volcanic plumes can drive significant environmental, economic and societal risks, but the lack of knowledge about their evolution makes forecasting their impact difficult. The aim of The STRAP research project (Transdisciplinary Synergy to Respond to Aleas related to Volcanic Plains) is to improve our ability to model sources, transport and impact of a diluted volcanic plumes on air quality and climate. This challenge involves communication and interaction between key scientific fields such as volcanology, atmospheric chemistry and physic, and remote sensing. STRAP is funded by the National Research Agency and is supported by the OSU-R (Observatory of Sciences of the Universe - La Reunion). The 13-minute long film proposed here is based on the first in situ measurements obtained from the source to the regional scale on the plumes of Piton de la Fournaise hot spot basaltic volcano (Reunion Island) thanks to its numerous eruptions in 2015. It foreshadows a larger 52-minute film on the entire work of the STRAP Project. Various field shootings could be performed featuring LACy (Laboratoire de l’Atmosphère et des Cyclones – Reunion Island University) and OVPF (Observatory of Piton de la Fournaise/IPGP) scientists (sampling of lava, gas measurements by ULM or in situ in near source field, mobile lidar experiment from proximal to distal locations). The film shows the teams of scientists and engineers in their work of observation of the plumes and summarizes the preliminary results. This is an original film produced and realized by the University of La Reunion in partnership with French National Research Agency.