Hira Misses Her Biological Merpeople Family (Ariel Mostly), But She Couldn't Reveal To The Whole School (Minus Hiroko Since She's The Only One That Knows That Hira Is Half-Human Half-Mermaid) That She Was Born As a Mermaid But Was Turned Into a Human By Her Aunt (On Her Mother's Side) And Was Raised As a Human Girl Then a Mermaid Girl And Since Her Uncle Triton Gave Her a Potion That Makes Her a Mermaid Again And a Human Again Any Time She Wants, She Needs To Learn How To Control Her Mermaid Skills One Day, Three New Girls Came To Their School, And Sing Beautifully That Everyone (Minus The HuMane 5, Hira, Hiroko & Sunset) Turn On Each Other, Yelling And Fighting With Each Other They Need Princess Twilight Sparkle's Help To Fix This This Is An Adventure Book Of a Film "My Little Pony: Equestria Girls 2: Rainbow Rocks" And The Seventh Book Of Hira Reland's Adventure Series Season 1.