Under the investigation of PING ON, he knows LAI WAH has given a key to TIN MAN. TIN MAN gives the key to YUK HING mistakenly. When PING ON goes to find YUK HING, however, he cannot.

PING ON guesses that YUK HING misjudges he and WAH rekindle their love relation. Due to her jealousy she leaves home. She meets an accident on the way. PING ON finds her everywhere.

PING ON finds out unexpectedly that YUK HING and LEE FEI acquaint closely. The neighbours also spread rumour. He then suspects that they have adultery and questions LEE FEI.

In fact, YUK HING comes from a 'theft family'. Her naked name is 'flying butterfly'. She lives together with her brother. LEE FEI, since their early childhood, they uses theft to earn their living.

After she meets PING ON, they fall in love. As to avoid their identity influences their relationship, YUK HING decides to withdraw from theft. She marries PING ON.… ...