Green Lantern Corps, Volume 4: Sins of the Star Sapphire

Hal Jordan may be Earth's best-known Green Lantern, but he's not alone. He is just one of the Green Lantern Corps, an intergalactic police force, each of whom protects his or her space secret from evil with the aid of a power ring capable of anything its wearing can imagine.
In this new Green Lantern Corps volume, the powerful and beauteous Zamorans, led by their queen, Star Sapphire, have a new mission: to "cure" the evil Sinestro Corps by forcibly infusing them with love.

Collecting: Green Lantern Corps 27-32