In 2007, a woman brings the results from an experiment to Professor Munphy; later, he commists suicide.

During a game of billiards, Ding Yi explains to Wang Miao, the meaning of Yang Dong's suicide note.

Wang Miao discovers the numbers in the photos represent a countdown.

Unable to make a breakthrough, Wang Miao suspends the experiment and the countdown in his vision disappears; Shen Yu Fei shares an ominous message.

Wang Miao arrives at the radio astronomy observation base station and is received by Sha Rui Shan.

Shi Qiang learns of Ye Wen Jie, the only other scientist that Shen Yu Fei contacted still alive.