Although he was reluctant to part with his wife, the powerful boss Xu Yiwan (Xu Zheng) ended his failed marriage with his partner and wife Zhang Lu (Yuan Quan). Due to some psychological reasons, he tried to prevent his ex-wife from starting a new business overseas. In order to rush to the United States as soon as possible, he returned to his mother Lu Xiaohua's (Huang Meiying) residence to get his passport, but he and his mother boarded the K3 train to Russia by mistake. Like the elderly around him, Lu Xiaohua has endless excessive care and nagging for her son. During the long journey, Ivan suffered from torture. While he remotely controlled his cousin Guo Tie (Guo Jingfei) to destroy Zhang Lu's business, he started a tug-of-war with his mother. In the process, the mother and son were in constant conflict. Ivan gradually understood his mother's love, and at the same time he began to reflect on his life. All the way north, the long-lost "Red Berries" is expected to be sung again...