As with most traditional platformers, there isn’t much of a story here. You play as a knight who hears a beautiful mermaid singing. Before you can talk to her, she swims off. You spend the rest of your adventure chasing after her. It isn’t much of a driving factor, but one isn’t needed because the primary focus is on gameplay.
... Blossom Tales stands tall even next to its legendary predecessor. It starts with its storytelling. Zelda games can get slightly repetitive with the “evil entity steals or harms the princess” arc, and admittedly, Blossom Tales doesn’t stray too far from that.