Noah French was an expert skier until he broke his leg, and now he won't get back on skis. His parents take him to stay at the Kickingbird Lake Resort, where Robbie and Rebeka, ghost twins, watch him play a computer skiing game. After their ghost St. Bernard gets into the computer, the twins must help the dog get out and help Noah get back to skiing on a real mountain.
Jeff, T.J., and their Aunt Jenny rent a vacation house haunted by Robert and Rebeka, the ghost twins, and their ghost St. Bernard, Thatch. When Jeff and T.J. go camping on Mystery Island, the ghosts tag along to spook them.
Geordi La Forge, chosen to join the training vessel "Benjamin Franklin" as assistant engineer, runs into difficulty when he tells Commander Sanchez that he has seen the ghost of the starship's first commander, Ike Ikushima, who died after saving his crew from disaster.
The discovery of letters written over one hundred years ago is the first in a series of coincidences that draws twelve-year-old Sarah into the unsettled events of her great-great-great-aunt's life.