My phoenix heir was in the beast pen

Elara, the mighty Phoenix royal lady, discovers a mute scarred slave boy bears her clan’s exclusive blood mark. She realizes her husband Lucien swapped her true son Kael with a peacock-blood illegitimate child Laine ten years prior, plotting to seize power with his lover Serene. Elara lays elaborate traps, exposes their treason, eliminates all traitors, restores Kael’s rightful heir status, and rules the fire domain alongside her blood son.