He is unhappily married to Rhea -LRB- Preity Zinta -RRB- but meets the lovely Maya -LRB- Rani Mukherji -RRB- , an ice princess whose husband -LRB- Abhishek Bachchan , son of the Bollywood superstar Amitabh Bachchan -RRB- can never quite manage to defrost her .