Abiyum Naanum is a family drama on Sun TV. Mukilan, the mischievous son of Shiva-Meena, pampered grandson of Rajeswari is the apple of their eyes. In a strange twist of fate, Abhirami, a sweet-natured and compassionate little girl who enters their home, out-of-nowhere, shares a special connection with Meena. Thus begins a beautiful tale that unfolds Abhirami’s affectionate bond with the family and the lurking mystery of her past.