Ambikapathy (Pandian) is the pivot around whom the whole movie revolves. An orphan, he comes to Chennai to eke out his livelihood. The very sight of Chennai initially scares him. But he musters courage to face all challenges. Marina beach beckons him. Ambikapathy decides to sell water packets. His friendly manners win him the admiration and love of young child labourers on the shores of Marina. An old man (Sundararajan) and postman (Jithan Mohan) turn friends for these children. There is a singer (Aatkaati Arumugham) and his young daughter Annamma (Jayashree) who live in the shores. The beach also witness every evening a lover couple Senthilnathan (Sivakarthikeyan) and Sopana Sundari (Oviya) coming there and spending time. All twists and turns lead to a riveting climax where the need to provide formal education to children and the need to do away with child labour is brought out well.