Here is a solid, dramatic summary for that part of the story: Ys VIII: Lacrimosa of DANA - Part 2: The Truth of Eternia
Based on the structure of the game Ys VIII: Lacrimosa of DANA , the second half of the story (represented by "part2") shifts from survival to uncovering the mysteries of the island and Dana’s past. Ys.VIII.Lacrimosa.of.Dana.part2.rar
Players constantly switch between Adol in the present (fighting to understand the island) and Dana in the past (trying to save her people). The gameplay reveals that actions taken by Dana in the past physically alter the landscape and secrets Adol can access on the island in the present. Here is a solid, dramatic summary for that