The Immortal Yannis, to repay Frank's life-saving grace from a past life, postponed his ascension to immortality and entered the Feng family as a live-in son-in-law. He pledged to protect them for three years through the heavenly tribulation and extend Felicia's lifespan. However, after the Feng family's company went public, Felicia viewed Yannis as worthless, used money and property to pressure him into dissolving the marriage contract, and sought ties with the Ou family. Yannis gave three chances to break the engagement, and Felicia wasted two of them (shattering the peace knot and demanding the thumb ring). Though the marriage contract remained undissolved, his protection wavered, and Neil and Mark from the Underworld came to claim her life. Felicia still refused to believe, and under the instigation of Theresa, she tore up the marriage contract. Heavenly thunder and ghostly enforcers appeared, but Piper temporarily averted the crisis using the peace knot. Later, the Feng family faced calamity, and the Ou family sought Yannis's help to save their father. Yannis eliminated Dean, who was the reincarnation of a celestial dog. When Felicia, filled with regret, pleaded for reconciliation, Yannis refused. After fulfilling his karmic ties, he ascended to immortality.
