Foremost, I appreciate how the sequel picks up right at the ending of it predecessor. If you enjoyed the first movie, this one is definitely worth the watch as it covers a significant portion of the guardians' past lives. Unfortunately it lacks the same charisma (potentially due to losing Cha Tae Hyun as a main) and the characters all get a bit cornier. Outside of the guardians' backgrounds, the blanketing plot around the grandfather and kid is pretty dull and the lackluster acting for the roles enhance this. The actions scenes however have improved a tad and the animation work feels even better this time around.

Most sites I've used to stream the movie has the same horrible subtitles. It left me guessing incorrectly on what was going on and twenty minutes in, I would have unfairly given the movie a significantly lower rating. Make sure you find one with subtitles that actually make sense (personally went with Viki).