Hello World: When the Promise

In order to save his sick mother, Lin Ye, an ordinary college student, took on a mysterious mission: to travel through time and rescue Su Yuwei, a girl who fell into despair after failing the college entrance examination, and was rewarded with millions. However, something went wrong the first time he jumped - he actually arrived six years later and met Dr. Su Yuwei, who had become famous and won the medical award. She smiled at him and said, "We haven't seen each other for many years. Are you here to congratulate me this time?" Completely off task. As he passively looked back in time again and again, Lin Ye discovered that Su Yuwei's life trajectory had been secretly revised and guarded by countless "selves" from different points in time. A Möbius strip-like cycle with life time as fuel and emotional links as ropes gradually emerges, and its origin is actually related to a tragic rescue many years ago. When Lin Ye and the current Su Yuwei knew each other and fell in love, and touched the truth together, the system that maintained the cycle began to backfire, trying to erase his "wrong variable". Faced with a fate destined to be exhausted and the ultimate obliteration hanging above their heads, the two must make a choice: accept the arranged "perfect future", or fight together, cut off the chains of the cycle with true feelings and will, and win their own, free tomorrow? This is a story about time, memory and sacrifice, and it is also a story about how love becomes the most powerful weapon to break destiny.