It's the cast of re:zero, in their normal setting, basically in-between the normal episodes, except for a change things aren't going terribly wrong. It's just some nice fun and character development with Subaru and co. Very slice of life, a snow festival, and it's just very neat. ^^
There's nothing outstanding about it as far as "movies" go (more an OVA or extended episode), but if you enjoyed re:zero, you'll probably like this, even with the lack of gore. It doesn't always have to be mayhem, sometimes we just want some nice moments with the characters we love!
