LOS ANGELES — The Walt Disney Company’s smallest theme park resort, Hong Kong Disneyland, which lost money amid declining attendance last year, will get $1.4 billion in enhancements as part of a colossal six-year growth plan.

The upgrades, announced on Tuesday afternoon in Hong Kong, will include an entire section themed around the animated movie “Frozen,” a first for any Disney park. Plans also call for a hugely amped-up castle, multiple rides based on Marvel superheroes, a new nighttime show with fireworks and fountains, and a performance venue based on “Moana,” an animated musical that arrives in American theaters on Wednesday.

Construction will begin in 2018 and conclude in 2023, with new offerings coming online almost every year during that period. The plans are subject to final approval by the Hong Kong Legislative Council and the Disney board.

The expansion highlights Disney’s belief in Hong Kong Disneyland as a potential profit machine — not just as a theme park but as a creator of demand in China and Southeast Asia for the company’s movies, toys, clothes, video games, books, cruise vacations and TV programs.