Seventeen years ago, Semion took Andrew to Russia right after his parents' funeral. He didn't let him see off his friends or other family members. But thirteen year old Andrew couldn't care less.
Even during the funeral, he did not say a word. He just followed his grandfather as he had asked him to.
Initially, Andrew did not exactly understand what his mother was trying to tell him. Her words only started making sense after he started staying with his new so-called family.
After his parents death, he turned into an extreme introvert and isolated himself from the crowd. When he first met Owen, he tried to avoid him too but when they started talking little by little each day, he realised they had so much in common.
Just like him, even Owen and Elsa were forced to stay in the Volkov mansion. Andrew also learned that Owen wasn't a fan of his father, Javier and Semion just like him.