Oegye+in 2bu

You must see Alienoid first for this movie to make any sense. It does give a small synopsis of the first movie at the beginning, but only so informative.

Aliens from another world imprison their criminals here, inside the bodies of humans (without their knowledge). The alien stays there and dies when the human dies. An interesting concept.

Any movie/show involving time-travel can be challenging, but if you paid attention, these movies were easy to follow. I found them both to be entertaining. The characters were interesting, there were no lingering questions, and the slight humor throughout was funny.