The movie Thor: The Dark World is about the adventures of the superhero Thor, but MCU fans do not receive it well. The overall tone of the film is dark, with insufficient characterizations of Thor and Loki. Still, it is the first appearance of the important Infinity Stone and plays a major role in the MCU as a whole. It is worth a watch.

If you liked Terminator 1 and 2, you might enjoy it. As for the contents, it was a parallel world to 1.