The main backbone of the first Transformer story begins with the need for All Spark. Transformer robots battle the Autobots and the Decepticons on their home planet Cybertron, destroying Cybertron due to the destruction of the Decepticons leader Megatron.
Decepticons are those who seek to rule the universe in search of the All Spark.
The leader of the Decepticons, Megatron, was shocked to learn that there was an All Spark on Earth, and an unexpected landing crash caused him to freeze under the Arctic Ocean ice, which was discovered by Sam’s grandfather, Captain Witwicky.
It was here that he accidentally activated Megatron’s navigational system, causing the spectacles to appear on his glasses.
The Megatron and the All Spark frozen under this ice were recovered by Sector 7, the US government’s top secret organization. To prevent further spillage of energy from the All Spark, a large diversion dam was built around the site.