Pokémon Soulstones 2 Time Wardens

You feel a voice calling out to you in your sleep on the night before your 21st birthday. The voice is calling out to you for help and to find her as she is in trouble and vulnerable. You will soon find yourself caught up in a plot that involves assisting a visitor from an alternate universe as she investigates and attempts to unravel the objectives of the Ethereal Guild, a loosely associated band of mercenaries, pirates, and profiteers who have ambitions for intertemporal dominance. While their organization lurks in the shadows, it appears as their influence runs deeper than anticipated, threatening the stability of the Orion region.

Source: TheGamesDB