Everything is changing for the Voltron Force. One of their number has perished, another casualty of the turmoil engulfing the galaxy. One of them is intending to leave the unit permanently for a much different life. One of them is receiving the opportunity of a lifetime, even though they might not be ready. One of them is committed to saving everything there is. And one, well one of them is carrying a secret that ensures they'll never again be welcome amongst their ranks. One door closes and three more open in '31 Days,' as the Galaxy Alliance decides just how many more Voltrons are truly necessary to defend the universe...