Catharsis revolves around a teenage boy's attempt to relive his past by writing a story of how he changed over time.

Samath's humble and patient demeanor is also highlighted in the movie and contrasts vehemently with the sense of entitlement we see in children educated in major cities. His innate desire to ensure that his village receives electricity and find a practical method of supplying water to his parents' paddy field are what motivate him. Will he succeed - '5 Samath'.