Fall of Aiur

In StarCraft, after the dark templar Zeratul kills the cerebrate Zasz on Char, his mind briefly links with the Zerg Overmind, which learns the location of Aiur, the Protoss homeworld it has sought for millennia. The main Zerg swarm invades Aiur and, despite heavy Protoss resistance, the Overmind embeds itself in the planet's crust.