In a certain alley in Beijing, there live seven children who call themselves the "Seven Little Fortunes".From childhood to adulthood, they have enjoyed blessings together, shouldered everything together, and regarded each other as family members who are not related by blood.Until changes and accidents happened one after another, relationships changed, and conflicts gradually became apparent. Differences and hidden dangers that had been ignored were superimposed and magnified infinitely. They began to question each other's sincerity and dedication, and cracks and crises appeared in the originally strong small group.There are constant tests on the road of life. Can they successfully overcome the difficulties and defend their friendship?