因為無心地惹惱了河童王國的王子，一稀、悠以及燕太被迫變成河童，開始了在淺草打擊河童殭屍的生活。雖然打敗河童殭屍後的獎勵是可以實現願望的「希望之盤」，但在過程中三人也必須以洩露自己的秘密為代價。這才讓大家知道，每個人為了維持與他人「聯繫」都秘密地背負多少故事......

Tim returns home from the Peace Corps to find that his best friend Chaz has married his mother. Now the two friends must live under one roof after one has broken the number one rule in bro code: don't marry your bro's mom.