What's not to understand?? It's an animation. It's not supposed to make sense.

But, only so you understand. AHEM. A silver-blue coated he-wolf is missing his Mother after her death. Days after, he's talking with his best friend about the stars. As the stars are said to be the spirits of former moon warriors. But Speckpaw doesn't believe in that. He believes the stars are millions of small planets in the sky. Which, could be right. But it's not confirmed. Speckpaw then notices Blueleaf's behavior and confronts him about it. Blueleaf then says he misses his Mother and cries. Speckpaw then says that it's time for him to forget about Mom's death, and remember she's in a better place now. After giving some good advice. "Don't let your grief get in the way of your life." Which means, don't feel so bad about a death that you can't live your life. Does that explain enough for ya?? -_-