Complex sentence: The series speaks of 5 businessmen who were willing to destroy the planet for money, until they were visited by Father Time turned into animals, which can become human again, only if they get the 500 crystals Father Time has scattered across the Earth.
Split into simpler sentences: The series speaks of 5 executives who were willing to destroy the planet for money. To put an end to this they are visited by Father Time who turns them into animals, which can become human again, only if they get the 500 crystals Father Time has scattered across the Earth.