Robotech

An advanced recon vessel blasts into the vicinity of Earth from hyperspace, only to find their home planet surrounded by an armada of gigantic alien warships! Unable to make contact with Earth, and remembering what happened to their planet in the past when it was invaded by the Zentraedi, the crew of this heavily armed starship make a desperate decision, to meet the alien armada with a surprise attack. The outcome of their effort is uncertain.