Abraham works to save Chloe and Mitch from a drug lord; Jackson and Jamie continue to work with Agent Shaffer in search of Evan Lee Hartley and the Mother Cell after Leo is killed in the crash.

Chloe tries to bring light to the rising threat from the animals. Jackson is taken to a hospital and while they are there Mitch works to create a cure. However, there are many obstacles they must overcome.

Jackson faces the most difficult decision of his life. Also, Mitch reluctantly enlists help from his father, Max Morgan, to investigate the origin of the final set of triple helix animal bones,