In the summer and sunny day, the Nektons starting for new adventure but something is missing from the Nekton Family, and who they are? Unfortunately it's unknown... Then Grace has choose to use her heart and to protect her family while they explore that world. However, the brave and even beautiful Grace Nekton will succeed in achieving her goals or not... Because the one who will change the whole life of the beautiful Grace, he will also be the one who is the smartest but also young man named Alpheus Benthos who loves her even/if they are enemies to each other. But she will gives to him a another chance to not? Until Alpheus will changed her whole life before that young guy named Jacob Barraclough Hammerhead with his family, Dark Orca...
3 parts