A pair of anomalies opens in a prison, one to the Pliocene allowing a terrorbird to attack, and Danny Quinn to return. He meets Ethan and realises he is his lost brother. Matt reveals he is from the future and trying to prevent an apocalypse involving the anomalies. Emily returns to the 19th C and both Danny and Ethan to the Pliocene. Connor discovers that the incidence of anomalies is increasing and potentially dangerous.