You are a scientist who is trying to find a way to cure the two zombified lovers who only want to be together by using the power of laser. Your goal in each level is to guide your two zombie test subjects to reach one another by clicking the icons to activate various mechanisms around your lab.
Lightning bolts activate and deactivate laser blockades and platforms, for instance, while holograms of delicious humans can be turned on to lure them around. Once close enough to each other, they'll automatically be drawn together, so all you have to do is make sure the coast is clear.