This is a story about a family of four, with four children – a boy and three girls.These four children are extremely dependent on their parents, especially their attachment to their mothers.They are used to seeking comfort in their mother's warm arms and growing up under her care.However, one day, fate suddenly changed, and this loving mother passed away forever.The four young siblings had to face the heaviest blow in their lives, faced the pain of losing their loved ones for the first time, learned to accept reality in sorrow and reluctance, and grew quietly in this separation.