The title of my review summarizes how reading/playing this story felt to me.
On the one hand, parts felt like an illustrated bedtime story you might read to your children. The usual life of the shown rabbit society consists of sleeping, eating, digging and getting new cute rabbit babys, and the authors somehow manage to invoke the feeling that you (the reader) are indeed living this life.
On the other hand, the particular rabbit whose role you play has some higher goals: Very often, the peaceful and self-sufficient life of his rabbit friends is interrupted by hard "thuds" which endanger the rabbit's warren. As nobody else seems to care, it is your task to do something against these "thuds".
So you start an adventurous voyage, to discover what lies behind your usual warren, and to find a rescue against the "thuds". I won't write about any details of this adventure, but it's nicely done and shown with lots of great illustrations. Your rabbit-like movements and your partly-naive rabbit-like thinking are described well, and the urgency of the task is also comprehensible. So while everything remains cute (rabbits...), you still take your protagonist and his cause seriously.
Central to the game is one puzzle which requires a bit of thinking, but is not too hard. This is also the part of the story related to sci fi (you'll easily see why, once you have reached this part of the game. That's really a sense-of-wonder moment for our rabbit protagonist).
Overall, I don't regret playing this game; it took me about 30 minutes. I'd even like to read more stories in this setting.