The Suite Life on Deck (2008)

S02E27 Starship Tipton

Set in a distant future, Zerk, the great-great-great-great-great grandson of Zack, pulls a prank on two warring alien factions, leading them to threaten the destruction of Starship Tipton. To prevent disaster, the kids embark on a journey to the future to rescue their descendants and resolve the conflict. Additionally, London uncovers that she has a great-great-great-great-great grandson named Rome and discovers that the Starship Tipton is part of her family's legacy.