When a young scholar discovers a cryptic riddle from the river, he embarks on a perilous quest to uncover the ancient wisdom it holds, facing tests of loyalty and trust, all while a shadowy guardian watches his every move....

In a world where the river's riddle is the key to survival, a fox and a crane embark on a perilous journey to unravel its secrets, only to find that the true mystery lies within their own hearts....