Kids playing a game of hide and seek in the city, accidentally release a strange and apparently malevolent energy force, which threatens all of Atlantis. Meanwhile, Dr. McKaya 's experiment with an Ancient personal protection device leads to a threat to his life. Can the Atlantis team defeat a formless energy alien while trying to also save Dr. McKay from a sl ... Read More

Kids playing a game of hide and seek in the city, accidentally release a strange and apparently malevolent energy force, which threatens all of Atlantis. Meanwhile, Dr. McKaya 's experiment with an Ancient personal protection device leads to a threat to his life. Can the Atlantis team defeat a formless energy alien while trying to also save Dr. McKay from a slow death?