Resurrected: Don't curse yourself for the fault of your fate

Afrin is expecting her first child. Unfortunately her husband Sam gets trapped and killed in an earthquake that caused the collapse of their residential building. Afrin is saved. Nobody has the heart to tell pregnant Afrin of the demise of her beloved husband. However a fortnight after the earthquake Sam comes to the hospital and meets Afrin. Afrin hugs him and shows him their new born child. She is not aware that Sam had already expired. Who was that man looking exactly like Sam? Why was he cheating the innocent Afrin ? Would Afrin ever come to know the real man behind the fake face of Sam?