*HEAVY SPOILERS BELOW*
This movie was absolutely incredible. Going into this movie, I expected to laugh and have a good time; and I did. But I also cried--something I did not expect going into this. Rocket's backstory is heartbreaking; especially when Lila dies, and Rocket blames himself for her being killed. The ending is happy for the most part--Rocket finally excepts that he was just an innocent victim of animal testing.
There's so much more to the story than what I just explained, and I recommend watching it! Just remember to bring plenty of tissues. ;)
Five stars for this Marvel film!