Here’s a concise text summary of the game:
The game's narrative primarily covers the early arcs of the series, following as he begins his journey to become a Hunter and find his father, Ging. The story mode takes players through several iconic milestones, including: hunter x hunter wonder adventure
Rescuing Killua from his family home.
It sounds like you're referring to — a video game based on the Hunter x Hunter anime/manga series. Here’s a concise text summary of the game: