One Piece Dragon Dream (Import)

The Straw Hat Pirates are asleep in their beds except for a girl named Robin. They all dream of a cloaked young boy underwater playing music from a sea horn. In the morning, when Robin wakes the crew mates up, she is shocked to discover the crew have no memories of her or being in a Pirate Crew. It is up to Robin to not only reunite the crew and help get their memories back, but also find out the cause of their mysterious memory loss.

International release dates:
Japan: Apr 28, 05