SMW2 - 01 - Intro and Level 1-1

Baby Mario falls thousands of feet into the open sea and lives. A series of equally less probable events ensues and we discover that the Mario brothers are twins and that they apparently had no parents. Another revelation is the source of Mario's strange dreams in Super Mario Bros. 2 were the shyguys on Yoshi's Island. Why he never dreamed of Yoshi is a mystery for the ages.