Masa decides to explore RiverClan territory. Her brother, Taiga, doesn't care and keeps exploring ThunderClan territory. Masa then meets RiverClan tom and falls in love. Taiga is completely unaware of this. When Masa is expecting kits Taiga gets suspicious and confronts his sister. Masa reveals nothing, and says that she met a fellow rogue and fell in love. Taiga then pretends he no longer is suspicious so he can find out what Masa is up to. When Masa has her kits, a few days later when their eyes are open, she visits RiverClan tom with her kits. Taiga secretly follows. RiverClan tom is delighted but turns anxious when Masa begs for him to take her kits into RiverClan. Just then, Taiga springs out and kills one of the three kits. RiverClan tom quietly agrees to take both leftover kits into RiverClan, and he flees with the kits. Taiga then attacks Masa, killing her, and then he heads away, trying to erase all of that from his memory.