It was about 5 events in the plot where "shit hits the fan":

1) Comet hits Earth in January 2103 (article Impact Event )

2) The failed attemp to evacuate Tau in september 2103 described in Johan Ross article.  

3) The betrayal of the ARK launch (described in article The Ark Team ) in december 2103

4) The WAU is threatened and makes people's blackboxes explode in Omicron (described in the article Ralleigh Herber ) 

5)Akers Invade Theta in January 2104 (discribed in article Escape from Theta )