The Oneironauts 2: These Apparitions (2015)
As an astronaut sails the stars, an oneironaut sails the dream plane.
Having finally achieved his lifelong goal of controlling his dreams, Olan Valesco finds himself thrust into the midst of a mystical, hidden war. The combatants oppose one another only when asleep, and each side wants Olan to fight for their cause. Tangled between the two enemies, Olan can but writhe under the strain of being pulled apart.
Now the stakes are hoisted like a Jolly Roger. The conflict can no longer be contained on the dream plane. It's spilling into real life, and no one has enough pieces of the puzzle to plug the holes. Death lingers at the doorstep and every action or inaction could let it in. If Olan's friends can't find an end to the war, all of humanity could feel the sting.
The sting of hooks sinking into their brains.