Transformers Mobile Movie

Archibald Witwicky (an ancestor of the Witwicky family) fell into the abyss with a large piece of ice in a disaster, and landed on a robot's hand buried under the ice. When the captain woke up, he found the robot's eyes staring at him. This robot is none other than Megatron, who left Cybertron long ago to go to Earth to look for the Allspark...