After Lin Zhi was diagnosed with ALS, she asked her brother Lin Yi to sign for the donation of her body after seven years, but was treated coldly. The brother and sister were estranged because Lin Zhi chose her father and was unable to see her mother for the last time. Lin Yi was very repulsive towards her. It wasn't until Lin Zhi's condition worsened and Lin Yi was accidentally injured that the truth of the past was slowly revealed. The misunderstandings and regrets between the two eventually led to an irreversible ending.