Siddhart Menantu Idaman presents the bitter-sweet relation of ‘DD’ aka Durga Devi, her darling daughter Roshni and the former’s son-in-law, Siddharth. When Sid and Roshni meet, fall in love and get married, the latter is unaware of Sid’s background but eventually, she learns the truth and leaves him. However, destiny plays its cards and brings them back together, but the couple faces several hiccups in their relationship. What is in store for Sid and Roshni? Will their love stand the test of time?