Three men and women from different classes, like ordinary young people, have indulged and lost themselves. Ah Sen (Eason Chan) is a delivery boy for a flower shop and a part-time burglar. The rich girl Ah Wing (Miriam Yeung) hates living with her stepfather and coincidentally meets Ah Sen, so... Only in constant setbacks can young people from different classes gradually learn to know themselves, care about others, love others and love themselves, so that their youth will not be wasted.