As the Shen's prepare for Harmony Dumplings' grand reopening, they learn that they have become the latest victims of a crime wave that has hit their Chinatown community. As Nicky and the team prepare to take matters into their own hands, a run-in with a vigilante named Bo leaves Nicky wondering who this mysterious stranger in her city is. Elsewhere, following the legal fallout from her app, Althea and Dennis move back in with Mei-Li and Jin, and Ryan and Sebastian adjust to living together, while juggling their busy schedules. Finally, the unexpected arrival of someone from Nicky's past rocks her to her core.

After learning that Henry is a person of interest in a heist gone wrong, Nicky travels to Thailand to help him — a move that forces them to confront their unresolved issues. When Mei-Li needs help reorganizing at Harmony Dumplings, Jin and Althea team up to help. Elsewhere, Ryan gets some relationship advice from an unlikely source.