1.1 The Boundless Sea: River Song has immersed herself in early 20th century academia. But when a mysterious tomb is found in a dry, distant land, excitement comes looking for River. 1.2 I Went to a Marvellous Party: River Song always enjoys a good party but it doesn't take her too long to get into trouble. 1.3 Signs: River Song is on the trail of the mysterious, planet-killing SporeShips. Nobody knows where they come from or why they are here. All they do know is that wherever they appear whole civilisations are reduced to mulch. 1.4 The Rulers of the Universe: As shocking secrets are exposed, River decides it's time she took control of events once and for all.