Robert Walton was sailing on a voyage. Walton found Victor chasing the monster in the north pole. He introduces himself to Victor and he is on a scientific expedition. Victor then explains his life story to Walton.
Victor started to do research to expand his studied on life and death. Later into his studies he discovered the secret of creating something that was once dead. Frankenstein decided to use body parts that he got from the graveyard and assembled a "creature" who eventually came to life. When we seen his creation he ran in fear abandoning it and later became sick. This forced the monster to defend for himself.
The monster went on his own little voyage in search of companionship and love from someone who cares. Due to his appearance and having a hideous nature he was only given rejection. He was hurt and soon became bitter the monster searched for voctor to seek revenge.
William who was Victor Frankenstein's younger brother was murdered by his creation. The monster forces victor to make him a companion. Victor agreed to creating the bride with fear of more murders to occur if she was created so, he broke that promise and wanted to destroy the original monster instead of creating another one. The monster killed his friend closest Clerval and then Victor's wife Elizabeth because victor broke the promise.
After the murders of his family and friends, Victor seeks revenge from the monster. Victor follows the monster north to attempt to kill the monster or die trying. When this is occurring victor runs into Walton and his expedition. After telling the crew this unbelievable story victor dies.
The monster goes to pay respects to Victors body and explains to Walton that he has full intentions on killing by setting himself on fire. In the end, Walton decides to turn his voyage back partially due to the moral of the story. Walton realized that some scientific advancements are not worth the cost.