Storm in a Cocoon (Chinese: 守業者; literally "Property Protector"), is a Hong Kong pre-modern serial produced by TVB, starring Steven Ma and Tavia Yeung as the main leads.

As Hau Yee's best friend, silk factory worker Tong Bing Bing (Tavia Yeung) also shares Ka Yeung's suspicions and joins him to find the true cause of Hau Yee's death.

As they come closer to finding Hau Yee's murderer, the Poon family faces retribution and Ka Yeung and Bing Bing struggle to protect the Poon family's property, not realizing the murderer is much closer to them than they expected.

Though Hau Yee's murderer is apprehended, "Wing Tai Lung" later faces a new danger with the arrival of Chiang Chi Yan (Cheung Kwok Keung), who intends to manipulate and destroy the Poon family by first convincing Ka Hin that he is actually Chi Yan's son and not Wing Lin's son.

Believing that Wing Lin's constant criticism of Ka Hin's ability to run the business stems from Chi Yan's claims, Ka Hin willingly takes part in the plan to destroy the Poon family.