Summary of "他以為她拋棄他冷落她3年，到頭來發現誤會一場，直到她和別的男人結婚，他現身婚禮橫刀奪愛，才知自己蠢得徹底！"

The video revolves around a dramatic love story filled with misunderstandings, heartbreak, and eventual reconciliation. The main plot follows Gu Tianqi, who mistakenly believes that his love, Wenrou, has abandoned him for three years. As he grapples with his feelings, he discovers that she is marrying another man, Mr. Duan, which prompts him to crash the wedding in a desperate attempt to reclaim her.

Key Highlights

Gu Tianqi's emotional outburst at the wedding, where he confronts Wenrou and expresses his lingering love, leading to a chaotic scene.
The backstory reveals that Gu Tianqi and Wenrou were once deeply in love but were separated due to family pressures and misunderstandings, particularly involving letters that were never delivered.
The comedic moments arise from the interactions between the characters, especially when Gu Tianqi's attempts to win Wenrou back lead to humorous misunderstandings and witty banter.
A subplot involves the child Doudou, who is later revealed to be Gu Tianqi's son with Wenrou, adding depth to the story as both characters navigate their feelings for each other while considering their child's well-being.

The emotional climax occurs when Wenrou, after much turmoil, decides to give their relationship another chance, acknowledging their love and the misunderstandings that had kept them apart. The video ends on a hopeful note, suggesting a reunion and a new beginning for the couple.