I'm sorry; I can't recall. But what's the issue between him and his siblings?

they're half-siblings, his dad left him to get out of the house and also gave up his share of the company, the money and everything (y'know how it was with the grandma). So the siblings didn't even know of his existence up until he met them, so I guess they're trying to reach out to reconnect him with his dad.

Thank you!