在他的祖国争夺首次载人航天的竞赛中，宇航员候选人列夫·莱普斯被分配到一个秘密项目，其中涉及一项令人震惊的实验。

列夫带领伊琳娜完成宇航员日常训练。虽然她在某些方面让列夫和安雅感到惊讶，但其他方面却给她带来了麻烦。

随着反对伊琳娜存在的声音越来越大，列夫想出了一个特殊的计划来帮助她克服恐高症。

With less than a month until launch, Lev takes Irina into town for a little fun before she dives into days of solitude training.

While Irina undergoes her solitude training, a visitor from Sangrad with special interest in N44 has come to watch the candidates train.

A terrible dream leaves Irina shaken and unable to continue training. As Anya and Lev try to get her back on track, there's even more bad news about the test flight.

Now that the test launch is over, Lev is given new orders. His training pulls him apart from Irina who falls into Anya's care over New Years.

An incident during training sheds some light on Roza's fierce attitude. And after a long time apart, Irina has something important to tell Lev.

Irina and Lev spend some time together before they're pulled apart. As the launch date quickly closes in, the decision is made as to who will pilot the first human spaceflight.

As Lev prepares for space, he discovers that Irina has been lying to him. Worried about her, Lev expresses his gratitude in the only way that he can.

With the whole world listening, Lev wants to make sure Irina isn't forgotten. But the Delivery Crew has their own plans for Irina and plots to seize her during the ceremony.