"This planet, Noumenon- created by the megastructure known as the Web- is too young and brutal to have evolved intelligent life. Its surface is bombarded by unusual meteors. Crystal trees abruptly and violently arise from its bedrock. Its solar system is surrounded by a frightening space-time anomaly. So where did these visitors come from? What do they want? And do the people of Earth, whose ancestors launched Convoy Seven, know they are here?"--