After their covert mission goes awry, Amuro Ray and his fellow soldiers find themselves stranded on a remote island. Their objective was clear - wipe out any opposing forces on the Island of No Return. But their plans were thwarted by a surprise attack from an enemy mecha and a group of child soldiers. To safeguard their team, Amuro must come up with an escape plan from this puzzling terrain. Yet, before he can do so, he comes across a stranger named Cucuruz Doan.