Ten years ago, the oxygen levels on Earth suddenly and dramatically dropped, and humanity fell into an unprecedented crisis. Scientists tried to find a solution, but to no avail. Some began to panic, while others chose to flee and hide in underground cities. And you, you, are one of the few who choose to hold on to the planet.
During this decade, you've been trying to find a solution to your problem. You've tried planting a lot of plants to absorb carbon dioxide and release oxygen, but it didn't work out much. You've also tried to harness solar and wind energy to produce oxygen, but these technologies aren't mature enough to meet the needs of all people on the planet.
Just when you're feeling hopeless, you receive a mysterious email. The sender of the mail is a man named "The Doctor" who claims that he has a solution to the planet's oxygen crisis. With a glimmer of hope, you found the doctor's lab at the address in the mail.
The Doctor is an old man with gray hair, and he looks very tired. He tells you that he's been working on oxygen generation technology all his life and has finally found a way to produce oxygen in large quantities. He says he needs your help because his lab has been attacked by some forces and he needs you to protect his lab and the results of his research.
You did not hesitate to accede to the doctor's request. Together with the Ph.D., you have developed a plan to promote the results of his research to the world. However, you face many difficulties and challenges. Some forces don't want the Doctor's research results to be made public, and they send a lot of killers to assassinate the Doctor and you.
The Doctor was seriously injured during an attack, and he tells you that he has uploaded his research to a cloud server that can save the planet if you can find it. The doctor also tells you that the password for the server is his birthday.
With the doctor's instructions, you embark on a journey to find a server. You encountered a lot of difficulties and challenges, but you never gave up. Eventually, you've found the server and succeeded in ** the Ph.D.'s research.
You bring your research back to Earth and replicate it around the world. The oxygen levels on Earth are gradually recovering, and humanity is seeing hope again. You became a hero and were admired and praised by people all over the world.