The Lighthouse Land is about Jamie O'Neill, who had his arm cut off to cure his cancer. Since then, he hasn't talked at all. His mother inherits Muck Island in Ireland, and a mysterious lighthouse lies on it. Jamie and his friend Ramsay explore the lighthouse and find the Salmon, which opens a wormhole to another world. On this world, Jamie talks and has both arms. This world has an island nation about to be attacked by the Alkhavans, a group of pirates who use Iceships carved from glaciers. Jamie and Ramsay meet Wishaway, an alien from Aldan, the island being attacked. They save her father, Callaway, from the Alkhavans. Then, a group of Aldans plan to overthrow the Alkhavans. They want to make Greek Fire, an explosive that would burn on ice. However, when they sneak into the city to get one ingredient, they're captured. Meanwhile, the Salmon is running out of energy. On their way to Alkhava, the ship stops. Everyone has come down with the chicken pox, and as no one except Ramsay, Jamie, and Wishaway, who traveled through the Salmon's wormhole, has an immunity, it's killing them. Jamie saves them with a syringe by taking Wishaway's blood and injecting them. They go and are about to capture the incapacitated Commander Ksar of the Alkhavans when a group who hasn't succumbed to the pox attacks them. However, Ksar attempts to use the Salmon, but he wasn't in the right location. Therefore, it didn't work. The leader of Alkhava then attacks, but the Aldans have been cured and attack with Greek Fire. Then, Jamie, having fallen in love with Wishaway, decides to stay while Ramsay leaves. Unfortunately, he hears his mother screaming through the wormhole and is forced to go. Ksar breaks from his bonds but Jamie throws him off. Jamie saves his mother and finally talks back on Earth. However, the Salmon is out of power, so they can never return.