The gameplay is quite good, the junky art style that you will love and the animations when building and the funny way they walk is what piqued my interest.
The story is explained when you are going to select a mission.
Rewards and resources are quite good too.
You can restart, of course, if you got demolished by the enemies and you will know what to do the next time lol.
If you like this kind of genre, go play it! You will not get bored!