Justin makes a deal to obtain evidence that could prove his arson theory while Billie struggles to adapt to the harsh physical demands of tree planting. Meanwhile, Maisy attempts to draw out her mother's lies with a boring AGM, but nothing seems to crack Mimsy's veneer.

Maisy uses the anniversary of Derrick's death to get Mimsy to confess to burning down the Boathouse with Justin's help. Desperate for any opportunity to avoid her sibling love triangle, Billie agrees to go to Derrick's anniversary dinner in exchange for Justin promising to get her a job from Maisy.