Murugesan aged about ten brings his infant sister to Kodaikanal, where a provision store owner Nadaar takes pity on the kids and gives them a place to stay. A grown Murugesan is a tea stall owner who looks every bit a ruffian, talks little, does not show any emotions, has animalistic behavior, carnivorous eating habits and drinks arrack in litres. The one person who is the world to him, is his sister Azhagu on whom he dotes so much that people around call him Kangaroo. There is also Chellam a friend of Azhagu who loves Murugesan. The villain group consists of Ticket who wants to push Chellam in the flesh trade with the help of her sister who is already in it and a jeep driver who lusts for Azhagu. Murugesan bashes the two men for disturbing his sister and her friend and an enmity ensues. Murugesan discovers that his sister is in love with another jeep driver Mani and arranges for the marriage between the two much to the jealousy of Ticket and his friend. Just before the marriage Mani falls from a cliff and dies. After a few months Murugesan convinces Azhagu to marry again and fixes a groom who also dies from electrocution. Brother and sister move to another town where she gets married, but an attempt on the husband too is made injuring him severely and the unknown killer is ready to try again at the hospital. What happens to the brother and sister and who kills off every suitor of Azhagu forms the rest of the screenplay which has two unexpected twists in the climax.
Production for the film began in April 2013, with director Samy revealing that Kangaroo would be a film dedicated to caring mothers and stated that it was a family friendly film, marking a change from the controversial themes of his previous three projects.
Soundtrack
was the chief guest for the release of the film's audio soundtrack in December 2013. The songs are composed by Srinivas, with his daughter Sharanya Srinivas singing two songs from the film. Vairamuthu wrote lyrics for the film and stated that despite working on a small budget film, his efforts towards the project were similar to that of his grander ventures. Soundtrack receive positive reviews.
Sify wrote "To conclude, comparing to Samy's earlier ventures, Kangaroo is a better, family-friendly movie but in general perspective, it‘s a middling one!". Deccan Chronicle wrote "The plot seems interesting, but the way it unfolds in 80s style with mushy melodrama and insipid comedy, the pace suffers during the first half. However, post interval the momentum picks up with few unexpected twists and turns."