Wen Ying and Lu Chao take an instant dislike to each other when they first meet, clashing at every turn while maintaining a facade of harmony in front of others. As they spend time together, their two lonely hearts gradually draw closer, becoming a source of light for each other in the cold spring nights. They grow by leaning on each other's fragile backs, while the roots beneath their feet intertwine like branches joined together, tangled and inseparable. In the end, they find redemption in each other.