It'll be to this song:

[There should be a GIF or video here. Update the app now to see it.]

Swagtastic98
Parts:

1)Introduction- Hollyleaf running through the tunnels towards Fallen Leaves
- My friend (doesn't hav Wattpad)
2)Fallen leaves licks Hollyleaf's forehead then sings "tell me everything you saw" Hollyleaf looks up at him and sings "They had lights inside their eyes" twice and her eyes start to glow
-@_Rainpelt_
3) Fallen Leaves guides Hollyleaf through the tunnels into a moonlit cave while singing "did you see the closing window, did you hear the slamming door?" Hollyleaf sings "they moved forward and my heart died" twice while Crowfeather and Leafpool step forward in Hollyleaf's imagination and smile. Hollyleaf frowns
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4) Fallen leaves sings"please, please tell me what they looked like, did they seem afraid of you?"Hollyleaf sings "They were kids that I once knew" twice then starts to cry as Lionblaze and Jayfeather appear as spirits. Fallen leaves wraps his tail around her
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5) both sing "I can say it but you won't believe me you say you do but you don't deceive me,it's hard to know they're out there, it's hard to know that you still care" while they both burst out of the tunnels and onto the moor and run away from the lake. The lake and forests fade behind them.
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6) Fallen leaves and Hollyleaf transform into leaves (oak and holly) and fall onto the lake where Dovepaw is watching the water singing "I can say it but you won't believe me, you say you do but you don't deceive me" then looks up at sky
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7) the stars in the sky turn into broken hearts as  Hollyleaf and Fallen leaves disappear over the hill "Dead heart are everywhere" is written in the sky
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8) instrumental. Hollyleaf's tears hit the ground and she turns back to look at the lake but it fades away. Fallen leaves guides her further along the moors Away from the clans
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9) Hollyleaf sees images of battle and blood and they both turn and run back to lake. Fallen leaves sings "did you touch them, did you hold them, did they follow you to town?"
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10) Hollyleaf stands on the top of a ledge, overlooking the battle between the clans and starclan and the dark forest. She sings "they make me feel I'm falling down" twice as she jumps in to save Ivypool
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11) She slashes at Hawkfrost as Fallen leaves sits beside her in horror singing "was there one you saw too clearly, did they seem too real to you?" Hawkfrost slashes at Hollyleaf, blood spills as she falls to the ground
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12) Hollyleaf lays in a pool of blood and looks at Fallen leaves singing "they were kids that I once knew" twice
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13) other clan cats gather around as Fallen leaves sings "I can say it but you won't believe me, you say you do but you don't deceive me" he then looks into the distance and sings "it's hard to know they're out there, it's hard to know that you still care"
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14) lionblaze and jayfeather sing"I can say it but you won't believe me, you say you do but you don't deceive me"
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15) Hollyleaf reappears as a spirit in starclan. She is stood beside Fallen leaves and Spottedleaf. Hollyleaf is singing "dead hearts are everywhere" twice
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16) Firestar walks up to them and sings "I can say it but you won't believe me,you say you do but you don't deceive me" he looks down to the clans then continues singing "it's hard to know they're out there, it's hard to know that you still care"
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17)Spottedleaf sings "I can say it but you won't believe me, you say you do but you don't deceive me" and then smiles at Hollyleaf
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18) Firestar, Spottedleaf, Fallen leaves and Hollyleaf sing "Dead hearts are everywhere" twice as they sit among the stars
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19) instrumental. Lionblaze looks over the moor and remembers Heathertail. Hollyleaf is stood among the stars, smiling
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20) Hollyleaf is sat beside Fallen leaves and sings "They were kids that I once knew, they were kids that I once knew, now they're all dead hearts to you, now they're all dead hearts to you" and then nuzzles into his pelt
-GingerSnapCat25
21) Ending credits.
-@_Rainpelt_

~DEADLINE~
30th June