Dana Scully (Gillian Anderson) and Fox Mulder (David Duchovny) continue to investigate that which cannot be explained in this collection of season six of the series. Every episode from the 1998-1999 campaign is included, as a millennial frenzy builds and cover-ups abound. Episodes included in this collection are Triangle, Dreamland, Arcadia, The Rain King, Agua Mala, The Unnatural, Milagro, One Son, and Two Fathers.