2 Danish teen brothers visit their grandpa on his old fishing boat and scuba dive. Some men hire an old minesweeper to find the sunk German sub U-461 from WW2 but the brothers find it. A lot of strange things start happening.

One day while scuba diving off their grandfather's boat, teenage brothers Christian (Robert Hansen) and Ask (Ralf J. Hollander) discover the infamous German submarine U-461, which sank off the Danish coast at the end of the Second World War.—g.c.