Disguise

BIG THANKS TO @Mousedapple FOR THE HELP!
I DON'T OWN WARRIOR CATS, ONLY THIS STORY'S PLOT AND CHARACTERS (ONE CHARACTER EXCEPTION.)
Thrushkit is a kit born into Riverclan. Only three moons old, he's a timid cat, preferring to stay inside the comfort of the nursery, with his mother, Sunwhisker. However, when he's challenged by his siblings, Frostkit and Rockkit, he's determined to prove himself, which nearly costs him his own life. Something bigger is threatening to take over his life, disguised as a small inconvenience.