Vostok programme
Both the Americans and Soviets are planning manned space flight, and we see both sides preparing to do so with the development of the Vostok programme (USSR) and Project Mercury (USA). As well as basic details about the capsules and their delivery vehicles, we also see some of the selection and training of the Russian cosmonauts, and rather less of that of their counterparts in the US. After difficulties and failures on both sides, including a side story about a catastrophic failure of one of the first Russian ballistic missiles, the Soviets succeed in putting Yuri Gagarin into space first, with the Americans putting Alan Shepard up shortly afterwards.