What's going on with the backstory?

So "Dungeons and Dragons: Dark Alliance" was a day one release game for Xbox Game Pass, and I was interested enough to jump into it. However, the story appears to pick up from a point in time, rather from the start.

It appears that the heroes have come back from a grand adventure, only to stumble into the events of this game; and even though they give me a loose idea about what is happening, I am given the feeling that I am supposed to know a lot more about the current story then what they tell me.

I have done some research, and I am told this is a spiritual successor to the Baldur's Gate franchise. I have to say, while it's been a decade since I played Baldur's Gate, I am still concerned with how oblivious I feel I am, to the story.

I've been told it is also a sequel to a series of novels, but I don't believe such a big shot developer would base the entire story of one of their AAA games off the assumption that you had read a set of books, especially given the gross change in median.

Lastly, the game takes place in Icewind Dale, and I am familiar with at least one title that takes place in the same region; but I don't know if that is enough to assume such a correlation to consider it a prequel; and I wouldn't want to play it if it turned out that both games were completely unrelated.

What media do I need to go through to be up to speed with the base story of Dungeons and Dragons: Dark Alliance?