You had a dream where this lucario was tormenting you as if we were in a Looney Tunes cartoon, and obviously you tried to escape from him. But by the end of it, he started guilt tripping to make you feel sympathetic. You tried to hug him for comfort, and that's when he put chloroform on your face to make you unconscious. The last thing you heard before unconsciousness, was something about him bringing you to a chamber where you'd get transformed into a lucario and join his lucario brigade.