Thor: Ragnarok - What The Ending Really Means

5. The Soul Stone Is Still Out There

Despite lots of rumours ahead of release that the Soul Stone was going to be uncovered in Ragnarok - possibly as the source of Odin's Odinforce or the key to Heimdall's powers of sight - the final Stone's whereabouts remains a mystery.

That means we're either going to see it revealed in Black Panther - which seems surprising, given how much of a stand-alone that looks like - or at some point in Infinity War itself. Considering how each Stone has been revealed to be powering something else, you'd have to assume it's probably already active in the MCU.

Basically, we're running out of opportunities for a good way to introduce the Soul Stone, so Marvel must have something pretty special hidden up their sleeves to explain it.