When MIT grad student Liam Cole discovers an asteroid is set to collide with Earth in 186 days, he joins forces with tech billionaire Darius Tanz and the U.S. government to try and stop it - and together they stumble onto the greatest conspiracy never told. (imdb)

Darius and Liam work to invent a theoretically impossible piece of technology to divert the asteroid, and Grace risks everything to help Darius. Also, Liam heads home to Boston to track down critical research, but finds something shocking instead. (imdb)

It's a race against time as Darius must accelerate his plan to stop the asteroid before the Pentagon shuts him down. Also, Grace has to make difficult decisions that could have life or death consequences for millions of people, and Liam and Jillian reunite under surprising circumstances. (imdb)

To prove to Harris and Grace that he's not a traitor, Darius must reveal a closely guarded secret; Liam helps Jillian adjust to her new job at Tanz. (imdb)

While Darius works to discover who killed his friend Lazlo, he is forced to reckon with his past, and Liam discovers who's been selling secrets to the Russians. (imdb)

Darius recruits Grace, Harris and Liam for a dangerous mission, and Jillian confronts Liam about his secret. (imdb)

Darius and Grace slip off to Russia to try an head off nuclear war. Liam finds solace with Amanda. (imdb)

Darius and Grace are framed for murder and captured by the FSB. Liam tries to woo Jillian back to Tanz Industries. (imdb)

An assassin threatens Grace's life. Unlikely alliances are forged. (imdb)

Grace and Darius seek answers from the President and Harris discovers deadly secrets. (imdb)

Grace and Harris must forge an alliance when their children's lives are in jeopardy. Also, Liam presents Jillian with an unusual proposal. (imdb)

Darius, Grace and Harris join forces to prove the president was murdered. Also, Grace tells Zoe the truth. (imdb)

Harris, Grace and Darius must topple the illegitimate government, and Darius makes final plans for the ark. (imdb)