Director Rodrigo Blaas’s short film “Alma” presents the illusion of whimsy and magic at first sight, but deep down “Alma” is one of the spookiest short films made in years. Its entire premise seems to be a metaphor for child endangerment and how easily children could get sucked in to the darkness of the world and disappear forever. The sentient store in the story could very well double for a stranger offering a child a treat, while the young girl in the movie is the child submitting to the temptation and paying a deadly price.