一年中的九天

古谢夫（阿勒克塞·巴塔洛夫 Aleksey Batalov 饰）是一名年轻的物理学家，整日埋首于实验室中，和那些复杂神奇的化学元素相依为命。古谢夫有一个相恋多年的女友廖莉亚（塔季亚娜·拉夫罗娃 Tatyana Lavrova 饰），同样身为科学家的廖莉亚对于男友的冷落和无视感到十分愤怒。 　　库里克夫（因诺肯季·斯莫克图诺夫斯基 Innokenti Smoktunovsky 饰）虽然也是一名科学家，但却和古谢夫有着天壤之别，他热爱科学，但更热爱生活，廖莉亚渐渐被库里克夫所吸引。可是就在这个节骨眼上，廖莉亚得知古谢夫在试验中受到了严重的辐射，心痛的她毅然决定回到古谢夫的身旁，陪伴他走过最后的日子。Two young scientists are exploring new fields of nuclear physics. Dmitry Gusev and Ilya Kulikov are good friends, but rivals in love. Dmitry marries Lyolya and they live happily together. Luck has it that he makes an important discovery. Unfortunately he exposes himself to radioactivity during the experiments. As a result he falls seriously ill. However Dmitry has a strong spirit. His will to live, the deep passion for his work and his strong love for mankind makes it possible for him to recover.