Rajathanthiram: The Piano

A man named Arumugam receives a pink diamond from an Englishman as a reward for his kindness. To keep the gem safe, he commissions a custom piano with a hidden compartment that opens only when a specific song is played. He teaches a different part of this melody to each of his four children. Years later, Arumugam suffers from Alzheimer's and forgets the secret, and his family remains unaware of the diamond. The conflict arises when mysterious and dangerous individuals discover the truth and target the family to steal the jewel.

This Malaysian mystery drama was directed by Sakthi Chidambaram, following his work on Samrat and Machan, and preceding Jolly O Gymkhana. The screenplay was written by Phoenix Dassan. The film features a cast including K. S. Maniam as Arumugam, Moon Nila as Akshara, and Thevaguru Suppiah as Deva, alongside Haridhass S, Govind Singh, and Shamini Shradha. Produced by Spike Productions (M) Sdn. Bhd., the movie has a total runtime of 131 minutes.