Young Xu Haien, life although impoverished, and mother Wen Qing and his brother to Alzheimer's and three dependent contentment; but in a conspiracy of the accident, let siblings lost her mother, immediately into trouble. Brother and sister both become relatives between the hot potato, Watermoon hostel owner of wealth and his wife Kisaragi, timely lend a helping hand, considers this period of life is full of thorns; fortunately, Hein always optimistic in the face and side has Watermoon B & B small boss students Zhang Xuanhao and encountered the same Huan Wei, waiting quietly, but Alzheimer's is always resented face, let bosom hate Ding Zixin, organic can take advantage to the enemy......