The Cures race to the second MegaByogen, created by Shindoine to pollute a river, managing to purify it before Cure Fontaine receives power from the Water spirit. The final MegaByogen created by Daruizen is terrorizing a meadow of flowers. However, their encounter with it was unsuccessful as the MegaByogen's infection on the area was now too powerful for the Cures and overwhelms them. After the attack, Daruizen noticed that the MegaByogen created a dark seed that went somewhere...