Jake's parents went on sabbatical in 2367, and by special arrangement, allowed their children to remain aboard the Enterprise-D with the stipulation that they both stay out of trouble. The starship stopped over at Ogus II that year, and Jake and Willie visited the planet's laser duel games. Jake tricked Willie into believing that he had killed Jake by breaking a balloon filled with red dye after Willie fired the laser pistol at him. Frightened, Willie fled into a forest. While there, he ingested a cove palm fruit and was infected by the deadly parasites inhabiting that fruit. He was rushed to Starbase 416 for emergency treatment, and Jake was reprimanded by Commander Riker for the incident. Although Willie was initially upset at his older brother, he later forgave him and the two were playing together as the Enterprise-D arrived at Starbase 416.
During the trip, Lieutenant Commander Data was temporarily under control of Dr. Noonian Soong, who gave Data a subconscious instruction to return to the Terlina system at all costs. Data was escorting Jake to see his brother when Soong sent the signal. (TNG: "Brothers")