Who Is That Splashing in the Mediterranean?

Two half-brothers have to go on a road trip to find their half-sister and receive a huge inheritance. Two half-brothers have to go on a road trip to find their half-sister and receive a huge inheritance. Two half-brothers have to go on a road trip to find their half-sister and receive a huge inheritance. Two half-brothers have to go on a road trip to find their half-sister and receive a huge inheritance.