Convinced that Gabriel's coldness towards her stems from a misunderstanding, Marinette decides to have a heart-to-heart with the father of the boy she loves… and her outstanding courage inspires her friend Kagami! She too would love to open the door to her ever-commanding mom's heart! Alas, the conversation comes to a sudden end when an unexpected guest returns and spirits Kagami away! Who is this mysterious guest? Will Ladybug and Cat Noir save Kagami? And will Marinette and Adrien ever have a chance to love each other freely?