Sayonee is a romantic-action-thriller revolving around Rajdeep Randhawa (Tanmay Ssingh) who is a national shooting gold medalist and falls for the beautiful Mahi (Musskan Sethi). Mahi reciprocates Rajdeep’s feelings and soon get engaged with each other. All seems to be hunky-dory when suddenly Mahi goes missing while Rajdeep tries to trace her. Mahi’s search leads Rajdeep to Russia where he puts his life at stake to take on the butcher smugglers and the Russian mafia all alone. Will Rajdeep find Mahi, who is behind her kidnapping and will he ever find out the truth behind her disappearance, all this is revealed in the climax of this high voltage thriller drama.