Back at Alexandria, with their friend Curtis Pepper visiting, Kensy and Max are enjoying the school break. Especially when Granny Cordelia surprises them with a trip to New York! It's meant to be a family vacation, but the twins soon realise there's more to this holiday than meets the eye.<br/><br/>The chase to capture Dash Chalmers is on and when there's another dangerous criminal on the loose, the twins find themselves embroiled in a most unusual case. They'll need all their spy sensibilities, along with Curtis and his trusty spy backpack, to bring down the culprit.