Beautiful, simple, straightforward and effective. An elderly man makes a rash decision to save his terminally ill wife and faces the consequences. Ultimately it's about coming to terms with grief and accepting inevitability, and it does so well. The art is effective and in many shots beautiful, and the voice acting conveys the tenderness the titular characters hold for one another. The script is pretty brutally depressing, but not all stories need to be about half-deranged manchildren shouting profanity while blowing each other up. That's obviously the calling card and draw of the series, but not every episode of the experimental side series needs to fit that formula.
In short, it's a very human story that happens to involve gore and superpowers, but it makes for a refreshing exploration of the depth of the Vought universe.