Xiao Bao (Ethan Ruan), a rookie in Hailong, came to Kinmen, where the sea and sky are one, but he was welcomed by the tough training brought by the devilish sergeant Lao Zhang (Chen Jianbin). After being demobilized, he was assigned to a special teahouse known as the "military paradise", but here he met his good friend Huaxing (Wang Bojie) from the new training center, and also discovered the secret that Lao Zhang had a special liking for Gillian (Chen Yihan). He remained loyal and was attracted by the waitress Nini (Wan Qian) at this time, and started a subtle relationship... Just when everything seemed beautiful, an accident happened in the teahouse. In the midst of the storm, Xiao Bao accidentally learned the secret hidden deep in Nini's heart! As his world began to shake, changes followed one after another...