Taming Hearts

The fifth story in the series is titled "Taming Hearts". It's preceeded by "Stowaway" and followed by "Nothing to Fear".

Synopsis
Growing Up Haddock Story 5: The time has finally come for the Haddock children to get their dragons. Hiccup and Astrid can't be more excited to teach them everything they know about training and bonding with them. And they're going to need to learn fast because Thawfest is approaching and only the best dragon trainer will be able to come out on top. Only HTTYD and R/DoB are canon.

Chapters

 * 1) Once Upon a Time
 * 2) Dragon Day
 * 3) The Next Challenge
 * 4) Dragon Training
 * 5) The Great Day Arrived
 * 6) Naughty
 * 7) The Dye Job
 * 8) Quiet
 * 9) A Crushing Reality
 * 10) The Trick Started Well
 * 11) The Next Dragon Master
 * 12) I'm Here
 * 13) The Games Begin
 * 14) What Matters
 * 15) New Beginnings

Appearing characters

 * Adrianna Haddock
 * Allie the Insincere
 * Astrid Hofferson
 * Benen
 * Charger
 * Cliff Smedley
 * Cori
 * Dana Sanders
 * Edna
 * Erick Larson
 * Finn Haddock
 * Fishlegs Ingerman
 * Gobber
 * Hiccup Haddock
 * Horst
 * Inga Jorgenson
 * Jacobi
 * Jillian
 * Lily
 * Matilda
 * Morgan Sigmund
 * Morgan's Nadder
 * Nyssa
 * Olaf Larson
 * Rosabella
 * Ruffnut Thorston
 * Signa
 * Snotlout Jorgenson
 * Spitelout Jorgenson
 * Stormfly
 * Tarry
 * Taryn Brand
 * Taryn's Changewing
 * Thorein Tailor
 * Thorein's Nightmare
 * Thornado
 * Toothless
 * Tuffnut Thorston

Mentioned characters

 * Aida
 * Allie's father
 * Alvin the Treacherous
 * Aud Larson
 * Aud's Nadder
 * Benen's father
 * Benen's Gronckle
 * Colt
 * Dana's father
 * Dana's mother
 * Helga Ingerman
 * Mara
 * Mila Ingerman
 * Ratri
 * Stoick the Vast
 * Tarry's Nightmare

Trivia
Timeline: The story takes place from June through August 1030.