Question about the first episode of Lupine on Netflix?

Got a question about the first episode of Lupine. Attention spoilers: The Pellegrini family or whatever they were called auctioned this necklace (don't know how to write it) and Lupine was able to steal it. At the same time, however, a necklace disappeared from this other family, where the driver, who has a son, was then accused. This family is also called Pellegrini? I don't really understand that. Will it be revealed later in the series or am I just being stupid right now?

Wasn't that a look back at the past. His father!

It's been a while since I saw the first part.

Oh thanks

I mean it was like that, he wants revenge for it