The present invention includes: a wearable device including a head mounted display (HMD); an augmented reality service providing terminal paired with the wearable device and configured to reproduce content corresponding to a scenario-based preset flow via a GUI interface, overlay corresponding objects in a three-dimensional (3D) space being viewed from the wearable device when an interrupt occurs in an object formed in the content to thereby generate an augmented reality image, convert a state of each of the overlaid objects according to a user's gesture, and convert location regions of the objects based on motion information sensed by a motion sensor; and a pointing device including a magnetic sensor and configured to select or activate an object output from the augmented reality service providing terminal.