I bought this DVD and its terrible.
Natural disasters cause all of Earth's land masses to sink . . . except Japan. As a result, Japan becomes a home for international refugees. The former U.S. President and famous singers and actors (including a guy made up to look like Arnold Schwarzenegger and another made up to look like Bruce Willis) all hang around in a Japanese bar, depressed because they can't find jobs. Funny, right? WRONG. This movie is an exercise in tedium and is one of the UN-funniest movies I've ever seen. The only amusing parts (which are very brief) are the scenes of cities being destroyed using cheap special effects similar to the ones in the old GODZILLA movies. In fact, there's one scene of GODZILLA fighting ULTRA MAN. There's also a "Nippon Song" segment (see below) that's so ridiculous that it's almost amusing (but not quite).
Yup . . . the world sinks, and this movie stinks. ZZZZZzzzzzzzzzzzzz . . .
http://www.youtube.com/watch?v=xCbPbV_W0hg
http://www.youtube.com/watch?v=o5NaoCpu6gQ
Judging from those preview images on those videos, this already looks like it's going to be very, very tedious.