Rainbow Dash's son Storm Streak is mad that he cannot enjoy a ride at the Ponyville Fair due to his age, so he searches for a mysterious artifact that he believes can turn him into an adult.
After over one thousand years of banishment, the three sirens have been freed and taken over the kingdom of the Hippogriffs. With all resistance broken and shattered, they look to spread their voice and song further abroad. Zebrica calls.
Flash Magnus faces his greatest test of bravery yet when he must find a way to confess his feelings of love to Somnambula. Little does Flash suspect that Somnambula has her own confession to make to him.
While Flurry Heart and her friends are vacationing in Southern Equestria, they meet Somnambula who is studying clues leading to a mysterious temple where she finds an old friend.
Stygian finally works up the courage to tell Somnambula how he feels about her, but Somnambula is busy coming to terms with the death of Prince Hisan. Still, she always has time for a friend.
After a run in with Somnambula, Scootaloo quickly realises that something is wrong. Enlisting the help of her fellow Crusaders, she knows for sure that they'll be able to help put a real smile back on Somnambula's face.
The tugboat, for its size, is one of the most powerful craft afloat. And the Seaquestria Tugboat Company is the power behind the docks and waterways of Hippogriffia port. This... is Tugs of Seaquestria!