For decades the Search for Extraterrestrial Intelligence, or SETI, found no conclusive evidence of any alien transmissions. As of today that is no longer the case. SETI has just received a repeated transmission on the hydrogen line, the ideal frequency to contact a less advanced civilization.

We are that less advanced civilization.

The radio burst repeated several dozen times and seems to be blue shifted. Whatever is emitting the signal is moving extremely fast towards the Earth and is slowing down. Through international collaboration it was found that the signal source was in our own solar system, near the orbit of Jupiter.

The meaning behind the message is still unknown. With the object's current trajectory it will arrive at Earth within 30 hours.

You have been chosen to lead the contact effort. Make the best use of your limited time to find Earth's answer to this object before it arrives. Tomorrow changes everything.