Xiao Keyue, Lin Zhihan, Yao Guoguo and Luo Xinran, four urban women with different growth trajectories, struggle and collide in the complicated city. They each pursue careers and love, laugh at the ups and downs of life, and always protect each other from the playfulness of best friends to the occasional quarrels. Facing family, friendship, workplace pressure and emotional choices, they shed their shells, grew up bravely, used humor and wisdom to break the shackles of prejudice step by step, and jointly find a happy life for women. In the end, in the four seasons of laughter and tears, they all achieved self-growth and gained their own happiness and friendship.