Its post Avengers and Lokis magic has been taken from him but he is free to roam Asgard as he pleases. Thor and his friends need Lokis help as a guide through a forest or something to find a diamond or some relic. the forest was beautiful in the day but deadly at night. There were mermaids and sirens and a troll who caught Loki when they were trying to get out of the woods. The siren looked like Jane and Loki killed her.
I remember that Loki had manage to work around Odins punishment to gain his magic again by using Amora and Thor blackmails Loki into helping them when he finds out or he will tell Odin.
Sigyn and her new husband were also in the story and Loki had killed him in the past.
PLEASE HELP ME I'M GOING CRAZY! :D