The Seventh Stone

Lara Mercer is an ordinary human, erring on the side of wonder and sarcasm. Until one night, a mysterious voice catapults her to Asgard, to meet some intolerable 'Loki' character donning an insatiable god complex - and plainly stating how he feels that some Midgardian ape heard the voice of a seventh infinity stone. A deal's a deal, but nerves don't settle when the only person you can trust is the power-hungry God of Lies.

(Set in the time between Dark World and Ragnarok)