Greetings, I am Sodok, a Vulcan merchant. Based on the information provided here, I understand that I was a long-time acquaintance of the Vulcan Ych'a. 

In the Earth year 2155, it seems Ych'a required assistance in investigating whether the Romulans had infiltrated the Vulcan government. For this sensitive task, she had Commander Charles Tucker III assume my identity, perhaps utilizing my contacts and knowledge of business dealings. 

As a trader well-acquainted with Ych'a, I was willing to aid