Is Batman Bad Blood self-contained? I found it on sale at my local store so I bought it, but apparently there are films before it.

I couldn't find Son of Batman and Batman vs Robin in the store, and the copy of Bad Blood seemed to be the last one in stock. I'm going to watch it anyway, of course, but is there assumed knowledge in this film that requires seeing the first two? If so, I might see if I can find them.

But if the movie is stand alone, I won't bother. Thanks.