After the Heart Pirates were assaulted in the sea by the Blackbeard Pirates just when they were about to arrive at Winner Island, their submarine Polar Tang was cut in half and Law's crewmates were captured by the enemies

With the help of Bepo - the Mink polar bear navigator - they both managed to get away from Blackbeard and got onto the coast of the island with Law, who's beaten to pulp by Teach. Thankfully, someone had showed up and came to their help