Sienna Colbert and her brother Jax Colbert are new to the Public Sienna and Jax meet Bella, Will, Brielle, Lukas, and Eric one day Sienna and her brother Jax go for a boat ride they end up at Mako until something magical happened they both get tails Sienna and Jax try their best to hide until Bella and, Will, Brielle find out will Sienna and Jax be exposed to the public or will their secret remain completely silent? find out in Mako Mermaids
6 parts