Lan – a detective fiction author – couldn’t bear the hurt from her husband’s betrayal, so she decided to leave the house and move to an rental apartment in an old building with her 5 years old son, Bi. One of her neighbors there was Thao, who was living with her husband and her stubborn teenage daughter Ngoc. Around the same time she moved in there, Vu – an amateur musician- also chose an apartment here to live in.