The plot thickens. Thor in a desperate attempt to fix the shattered Mjolnir turns to Dr. Strange. Who tell Thor that yes it can be fixed but at a cost. He and the hammer will be even more bound to each other and if the hammer is ever again damaged or destroyed it could spell the end of the god of thunder. Faced with this Thor does not flinch. He takes the gamble and with a newly healed Mjolnir he arrives just in time to bring Sif back from the dead releasing her trapped soul from the body of a dieing woman in the hospital.
This is the crib note version. Get on your horse or what ever and pick this one up. Thor is a flipping great read. Besides how else are you going to find out about the stuff I didn't talk about?