In Curse Of Strahd, when Nikolai had a memorable night with Shakti of the Wildhunt, eventually taking the young Wereborn's virginity outside of the tavern. She subsequently tried to avoid him, and he tried to make the feeling seem mutual, while asking all manner of secrets about her from her half-brother Ghalwin Forrester.
Unbeknownst to him, both The Pack and Fiona were plotting a revolt against the Vallakovich family, and he was caught unaware during the Riots Of The Blazing Sun; suddenly, his mother was the Baroness of Vallaki. Nikolai's life did not change much, as he was not truly privy to Fiona's plans or visions; however, the cultural change gave him more freedom in the town. The new baronet remained too timid to leave its protective walls, however, and with the Blue Water Inn deemed a place of bad fortune, began to simply purchase his wine and drink at home, growing more insular.