The story of Pier Solar tells about Hoston, a young botanist who is on a quest to save his father from a mysterious illness. He hears of rumours that a cure to his father's disease can probably be found in the nearest forest, and Hoston, disregarding his mother's warnings, sets out to find the cure.
The game is a classical console-RPG with round-based battles, similar to the Phantasy Star series on the Genesis. It features an engaging storyline and memorable characters.
Pier Solar also makes use of the Sega Mega CD, if available, by playing music and effects from an included soundtrack CD, adding an extra layer of depth to the game's experience.