Bocoran Alur Cerita Film Kannan En Kadhalan (1968)

Kannan is the adopted son of a retired Captain and Sundaram is the biological son. Mallika is the niece of this rich man, who is engaged, at birth to Sundaram. Mallika is secretly in love with Kannan. Malathi lost her father in an accident; she now lives with the widow as her adopted daughter.